knitido Magazine

November 20, 2025

What is the "support" function of five-toe socks? The effects and how to choose arch support

Many people may feel a decline in their physical strength, finding themselves easily fatigued during long periods of standing or walking, or struggling with balance during Pilates or running. Additionally, many suffer from foot problems such as flat feet or bunions. While it is known that five-toe socks allow the toes to move freely, what is surprisingly less known is how "support functions" work and how they support the feet. This article focuses on the arch support, cushioning, and non-slip features adopted by Knitido+, a specialized brand for five-toe socks. We will explain their characteristics and provide tips on how to choose the right socks for daily life and exercise. What are the "support" functions of five-toe socks? In five-toe socks, "support" functions refer to designs and reinforcement features that support the structure and movement of the foot, enhancing comfort, stability, and performance. Typical examples include: ・Arch support: A function that lifts and supports the arch of the foot. ・Air cushion: Reduces impact on the foot upon landing. ・Non-slip (grip): Helps maintain a firm stance. ・Ankle support: Secures the ankle area with a compression structure to prevent joint instability and twisting. These functions address concerns such as foot fatigue and instability, facilitating more comfortable walking and exercise. The importance of the foot arch Essential for foot support is the function of the arches on the sole of the foot. The arches serve as the foundation that supports the body, deeply influencing posture and movement stability. This chapter explains the roles of the three arches and offers tips for maintaining healthy feet. The role of the three arches on the sole of the foot There are three arches on the sole of the foot: the medial longitudinal arch (instep), the lateral longitudinal arch, and the transverse arch. ■ Medial longitudinal arch Composed of the calcaneus, talus, navicular, cuneiforms, and metatarsals. This is the highest arch, and it absorbs impact during walking and running, acting like a cushion. ■ Lateral longitudinal arch Composed of the calcaneus, cuboid, and fifth metatarsal. It serves as the "base" that supports the body and maintains stability. ■ Transverse arch A dome-shaped arch connecting the bases of the toes. It distributes weight and maintains balance by allowing smooth toe movement. The three arches work together to absorb impact from the ground across the entire sole of the foot, distributing weight efficiently to support the body, and enabling smooth movements like standing, walking, and running. Problems that can occur when the arch collapses When the arch collapses, the distribution of force on the sole of the foot becomes uneven, which can lead to discomfort. If this condition persists, it may affect not only the feet but also posture and movement. Common symptoms include: ・Flat feet ・Bunions ・Heel pain ・Knee discomfort ・Lower back issues If you experience fatigue easily during long periods of standing or walking, it might be related to the balance of your foot arches. Paying attention to your foot arches in daily life and actively moving your feet can lead to healthier, more comfortable feet. Support functions that "adjust" rather than "brace" To protect the foot arches, it is essential to adjust them through movement rather than bracing them rigidly. By naturally using the muscles of the sole and toes, you can enhance the foot's inherent flexibility and sense of balance. Five-toe socks, with their individual toe design, allow for free movement and can help naturally adjust the arch function during daily activities. Cultivating an awareness of your feet and creating an environment where the toe and sole muscles can move is the first step toward maintaining healthy arches. What types of "support functions" does Knitido offer? Knitido's five-toe socks feature various support functions designed to work with the foot's movements. Arch support, air cushioning, non-slip features, and compression designs each contribute differently to supporting the foot. 1. Arch Support Function Arch support is one of the signature features of Knitido's five-toe socks. By combining stretchy material in the midfoot, it creates a structure that effectively supports the three arches of the foot (medial, lateral, and transverse). This design gently conforms to the foot's movements, supporting stability during walking. It is designed to allow the sole of the foot to move naturally even during long periods of standing or exercise. With a fit that adapts to the foot's shape and movement, it enhances overall foot comfort. 2. Air Cushion The patented (Patent No. 6415680) air cushion is a unique Knitido technology. Cushions placed at the forefoot, midfoot, and heel each absorb impact from the ground, supporting comfort during walking and exercise. This feature ensures comfort even in activities that place significant stress on the feet, such as running and walking. It is a thoughtfully designed function that gently supports the foot while valuing the sensation of the sole. 3. Non-slip (Grip) The non-slip function is highly effective in activities like Pilates and yoga, where foot sole sensation is crucial. Grips placed across the entire sole prevent slipping on mats or machines, aiding stable movements. The grip allows for a firm push-off with the toes and provides a sense of security. It helps create an environment where you can concentrate on your movements without slipping, even when sweating. Among these, the "Core Grip" series features an enhanced grip thickness design, popular among those seeking greater stability. 4. Compression Design Knitido+'s compression design fits snugly from the ankle to the midfoot. Its three-dimensional knitting method gently supports the arch and ankle area, preventing the socks from slipping. Rather than tight constriction, it naturally holds the foot in place with movement, making it convenient for prolonged wear. Additionally, items featuring a patented manufacturing method (Patent No. 5377088) that avoids using elastic thread at the opening leave no marks on the leg even after long hours of wear, maintaining a comfortable fit. With its enveloping fit, it comfortably supports daily life. Why experts recommend them: The enhanced foot stability that comes from "support" Firmly creating and aligning the arch of the foot is essential for maintaining overall body stability. The presence or absence of an arch is said to affect standing posture, weight distribution during walking, and movement fluidity. This chapter introduces what experts perceive as "the meaning of supporting the foot." The appeal of five-toe socks, recommended by experts for daily use A distinctive feature of five-toe socks is their ability to allow each toe to move independently. This enhances the ability to grip the ground, naturally encouraging the use of the sole muscles. Kōsuke Morinaga, a lecturer at Hiroshima International University's Department of Comprehensive Rehabilitation, states that "freely moving the toes is important for strengthening the plantar muscles." Ai-ren Song, a Pilates instructor, says she feels a "noticeable difference in foot fatigue" when wearing five-toe socks and uses them daily. Read also[Expert Supervised] Explaining why five-toe socks are effective for bunion prevention and improvement!I want to keep walking for life｜Pilates instructor discovers the deep connection between Knitido's five-toe socks and wellness Pilates instructor on the importance of "foot sensation" In Pilates, the sensation derived from the soles of the feet is considered directly linked to overall body stability. For this reason, many instructors believe "barefoot is best." However, studio floors can be slippery or cold, making movement difficult. Takeshi Funakoshi, representative of Pilates Studio DEP, says, "The sensation of the sole of the foot is connected to the entire body. For those whose foot condition is not optimal, the support function of socks can be helpful." Five-toe socks support the arch, preventing foot instability and promoting more stable movements. By preventing coldness and slipping while enhancing foot sensation, five-toe socks are a reliable ally for improving movement quality. Read alsoPilates studio representative shares experience: The critical role of "foot sensation" for health and the support power of five-toe socks Physical therapists focus on the meaning of "supporting the arch" Physical therapists, as body specialists, believe that arch collapse affects not only the feet but also posture and stress on the knees and lower back. Yasunari Shuda, who transitioned from a physical therapist to a Pilates instructor, states, "It's important to focus on building a body that doesn't easily break down, rather than trying to fix it after it's already deteriorated." Shuda himself feels that wearing five-toe socks has reduced unnecessary strain and made him less tired even after long periods of standing. The gentle support function for the soles of the feet helps promote natural posture and movement, serving as a foundation for a healthy daily life. Read alsoTo age gracefully｜A Pilates instructor discusses the appeal of Knitido+

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March 20, 2025

[Expert supervision] The reason why five-toe socks are effective in preventing flat feet!

Foot health is essential for comfortable daily life. Among these, do you know that "flat feet," which are surprisingly often overlooked, can cause difficulty walking, swelling, and easy fatigue? In this article, based on an interview with Professor Kosuke Morinaga, Lecturer at the Faculty of Comprehensive Rehabilitation, Hiroshima International University, we introduce basic knowledge about flat feet, preventive measures, and how to use five-toe socks. Please make use of this information for healthy foot care that supports your daily walking. What are flat feet? Flat feet are a condition where the arch of the foot is lowered, and the arch structure collapses. The sole of the foot has a longitudinal arch called the instep, but if the instep is low or this structure collapses, causing the ankle to fall inward, the foot's original function cannot be fully exerted. The collapse of the longitudinal arch structure can affect not only the foot but also posture and balance, so caution is required. Main causes of flat feet ■ Impact of modern lifestyles Those who sit for long periods due to desk work should be careful. Prolonged sitting can lead to weakened foot muscles, increasing the risk of flattening the arch. Also, those with a habit of wearing high heels should be cautious. Hard shoes and high heels hinder the natural movement of the foot and prevent the use of muscles that form the arch, which can exacerbate foot problems. ■ Due to ankle stiffness Ankle stiffness is also a major factor influencing the collapse of the sole arch. If ankle movement is restricted, the necessary movements during walking are hindered, which in turn forces the knees and hips into unnatural movements. This can lead to poor posture and excessive strain on other joints. In particular, if the calf muscles become stiff, the range of motion of the ankle further narrows, making the longitudinal arch of the instep more prone to collapse. ■ Lack of exerciseRegular exercise is essential for strengthening foot muscles and supporting the arch. However, if you lead a sedentary lifestyle due to lack of exercise, the muscles in your feet and soles weaken, and their ability to maintain the arch decreases. This weakening leads to a gradual lowering of the arch, resulting in flat feet. Impact of flat feet on health What kind of impact does a flattened arch have on health? Effects on walking, increased fatigue, and decreased activity are possible, but here we explain the actual risks that may occur. 1. Impact on walking With flat feet, the inner arch of the foot drops, making the ankle prone to tilting inward. Since the skeletal structure of the foot collapses, weight is not properly distributed across the sole. In this state, shock absorption during walking and running is insufficient, putting extra strain on the ankles, knees, and hips. Furthermore, if the flexibility of the movable parts of the foot decreases, the up-and-down movement of the ankle is restricted, leading to inefficient walking. The correct way to walk is to land on the heel and push off the ground with the first and second toes (index finger), but if the arch does not have correct flexibility, the toes cannot be used effectively. Moreover, if conditions such as stiff ankles are added to this situation, people may walk by swinging their feet outwards and swaying their hips, compensating with other parts of their body. 2. Fatigue and decreased activity During walking, the heel is subjected to surprisingly large shocks and loads. For example, for a person weighing 50 kg, approximately 1.2 times their body weight, or 60 kg, is applied to the heel with each step. If the natural curve of the sole collapses, the heel cannot act as a cushion, and the entire sole is subjected to a 60 kg impact. When a large load is applied, the heel alone cannot support it, leading to easily fatigued feet. 3. Impact on posture and balance The feet are the foundation that supports the body. If the arch of the foot collapses, the force cannot be dispersed, and the entire sole must bear the weight. This load is transmitted throughout the body, causing the upper body to unconsciously try to maintain balance, leading to poor posture. With poor posture, stride length is also shorter, and the calf muscles are not fully utilized. If the pumping function of the calf, often called the second heart, declines, it can lead to poor circulation and swelling. Preventing flat feet To prevent flat feet, it is important to review daily lifestyle habits. Maintaining flexibility in the movable parts of the foot and strengthening the sole muscles can keep the arch in a healthy shape, so it is important to be aware of the condition of your feet and continue appropriate care on a daily basis. This chapter introduces three key points for preventing flat feet. 1. Maintain high ankle flexibility Pilates, yoga, and daily stretching can increase flexibility by consciously moving the sole and entire foot. If the ankle joint can be kept soft, it becomes possible to walk with correct posture, landing on the heel and pushing off firmly with the big toe. 2. Wear shoes that fit you Choosing shoes is an important point in preventing flat feet. When purchasing shoes, make sure they fit your feet while wearing socks. It is important to check not only the shoe size but also if the width of the foot is appropriate. When choosing shoes that fit you, pay attention to the following points: ・Sufficient room in the toe box ・A width (waist) that matches the shape of your foot ・The heel fits snugly ・Avoid excessively high heels It is also important to wear different shoes for different purposes, rather than wearing the same pair every day. If you often wear high heels for work, try choosing sneakers on your days off to avoid uneven stress on your feet. 3. Daily awareness To prevent the flattening of the arch, it is important to be aware of your daily habits, such as adopting a correct walking posture and avoiding prolonged sitting. A simple and recommended countermeasure is to wear five-toe socks. Since each toe can move independently, the sensation in the feet during walking is enhanced, making it easier to practice correct walking. Preventing flat feet with five-toe socks The greatest feature of five-toe socks is that each toe can move independently. This makes it easier to push off the ground when walking, and allows natural spreading and bending movements of the toes. Unlike regular socks, the toes can move freely, which can help activate the muscles in the sole of the foot. Synergistic effects with Pilates and Yoga can also be expected Pilates was originally devised as an exercise for the recuperation and rehabilitation of soldiers injured in war. It has the advantage of being able to be performed without undue strain even by those with low physical strength or injuries. The movements of Pilates and five-toe socks are an excellent match. During exercise, it is common to be conscious of the subtle movements of the sole and toes, so wearing five-toe socks allows for a more accurate perception of the foot's condition. Knitido's recommended five-toe socks | Beauty Air Cushion Series The Beauty Air Cushion series are five-toe socks featuring air cushions placed in the center of the forefoot and midfoot to support the arch of the foot, promoting beautiful posture. The original grip on the sole of the foot provides firm body support. The toe-cut type is recommended for those who want to feel the barefoot sensation with their toes while also desiring arch support. These are five-toe socks that support arch awareness with an air cushion in the center of the forefoot and compression in the midfoot. They can be used for various exercises, including Pilates and yoga, and their ankle-length makes them perfect for everyday wear. [[product handle="000000000110"]] Knitido's recommended five-toe socks | Run Air Cushion Series The Run Air Cushion series are five-toe socks with air cushions on the forefoot and heel. They feature an arch support function in the arch area, making them ideal for sports scenes, including running, where the heel is prone to impact. The arch support part uses a strong stretch material, which is expected to improve foot stability and endurance. If you want to cover your ankles, try this low-crew type. It offers the same functionality as the ankle type, but provides strong ankle support. [[product handle="000000000108"]] Summary Foot problems, including flat feet, are not something that happens to others. To be able to walk and live on your own two feet even as you age, it is important to take care of your feet now and be conscious of them in your daily life. "Maintain ankle flexibility, choose the right shoes, and consciously move your toes." This may not be difficult, but continuing it every day might feel a bit challenging. If you are not good at meticulous care or don't have time for stretching, why not start by wearing five-toe socks? Since each toe is independent, your feet will move more freely, naturally strengthening the muscles in the sole. Knitido+ offers a variety of five-toe socks that support foot health and comfortable walking. Please find the pair that suits you best to restore the natural movement of your toes and make your daily walks more comfortable. Also recommended [Expert Supervision] Why five-toe socks are effective for preventing and improving bunions! ■Supervised by Kosuke Morinaga / Lecturer Career: After working as a prosthetist and orthotist overseas and in Japan, became a lecturer at the Department of Rehabilitation, Faculty of Comprehensive Rehabilitation, Hiroshima International University in 2014.

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