Arch support insoles, size S, for sale. The outer box may be removed for shipping. Size S: 22cm - 23.5cm 【Integrated 6-Function Design】Posture correction: Improves X-shaped and O-shaped legs; Reduces joint stress: Alleviates knee stress and eases lower back pain and stiffness; Relieves localized discomfort: Alleviates heel pain, symptoms of plantar fasciitis, and quickly reduces foot fatigue. 【Accurate Arch Support】Three arch heights (low, medium, and high) are available to accommodate different foot types. This can help reduce foot stress, such as collapsed low arches, fatigue in medium arches, and pressure distribution in high arches. It caters to the differences in foot types of many people, and is expected to reduce foot stress. Before purchasing, check your arch type with a wet footprint and select the corresponding insole. 【Compatible with All Shoe Types】The ultra-thin design and 3/4 length of the insole make it suitable for various shoe types, including sports shoes, business shoes, casual sneakers, and outdoor boots. It doesn't take up space inside the shoe and doesn't feel constricting during daily wear. 【For a Wide Range of Users】Anyone can experience comfort, including hiking enthusiasts, travelers, those who stand for long periods, office workers, the elderly, or those who need walking support, reducing pressure on the feet, knees, lower back, and other areas. This product is not a medical device (classification: general goods), and individual results may vary.