Color: Black Size: 25.5-28cm (L) 【W's Shock Resistance & 5-Layer Structure】 Shock resistance is achieved with silicone gel and PORON material! PORON material is placed in areas where pressure is likely to be applied. Silicone gel disperses pressure widely and absorbs shock. A sports insole that protects the entire sole of the foot in a multi-faceted way. 【5-Layer Structure】 1st layer: Cotton...Absorbent, dehumidifying, deodorizing 2nd layer: EVA...Reduces impact during walking 3rd layer: TPU...Stabilizes from the arch to the heel with 3D shaping 4th layer: Silica gel...Disperses pressure during exercise and absorbs shock 5th layer: PORON shock-absorbing sheet. A shock-absorbing material used in yoga mats, etc., with high shock-absorbing performance. 【Features of PORON Material】 PORON provides a new sensation of fit and supports shock absorption in a wide range of active scenes. It has excellent shock absorption and exhibits outstanding fit near human body temperature. Excellent cushioning performance and shape-following performance. It is overwhelmingly less likely to deteriorate than other materials such as EVA and gel, and exhibits high shock absorption and resilience. It is a material used in internal shock-absorbing pads for insoles, sports gear, wear, yoga mats, etc. 【Convenient & Wide Range of Use】 You can change the color to suit your usage scenario with 3 sizes x 3 colors. Formal shoes and business shoes are black, sneakers for walking are blue, and casual shoes for off-time are gray; it's stylish to change the color depending on the situation. Suitable for small sizes to large sizes with M (22.5cm-25.0cm) / L (25.5cm-27.5cm) / LL (28.0cm-29.0cm). You can easily cut and adjust with scissors, so you can fine-tune it to fit your shoes. 【Wave-shaped Concave-Convex and Comfort】 The wave-shaped unevenness on the part that directly touches the sole of the foot not only acts as a non-slip but also provides moderate stimulation to the sole of the foot, providing a massage-like comfort. The front part has many ventilation holes and is responsible for moisture release, absorption, and deodorization. 【Thin Design & Quality After-Sales Service】 Thin design with a heel thickness of 1.5cm and a toe thickness of 0.5cm.