SIZE CHART: XL (48~50 yards): length 31cm, width 10cm, arch height 3.6cm, forefoot thickness 0.35cm, heel thickness 0.75cm L (45~47 yards): length 30cm, width 9.8cm, arch height 3.6cm, forefoot thickness 0.35cm, heel thickness 0.75cm M (42~44 yards): length 28.5cm, width 9.6cm, arch height 3.6cm, forefoot thickness 0.35cm, heel thickness 0.75cm S (39~41 yards): length 26.5cm, width 9cm, arch height 3.6cm, forefoot thickness 0.35cm, heel thickness 0.75cm XS (36~38 yards): length 24.5cm, width 8.6cm, arch height 3.6cm, forefoot thickness 0.35cm, heel thickness 0.75cm COLOR CHART: Orange Suede Green grey mesh black Orange Mesh Green red suede black Material: BK mesh, velvet, PU, GEL, TPU,Soft, light and comfortable to wear. Provides additional support for heel and foot. Additional cushioning follows for best results. The U-shaped cup design stabilizes the heel and improves walking stability. Breathable mesh design will give you good ventilation and avoid unpleasant odors. Arch support design to disperse ground pressure and relieve discomfort. Helps the root of the foot remain neutral during exercise, balance the inner, outer and transverse arches of the foot during walking, and the deformed structure of the foot in a neutral and stable state. This is a very good flat foot corrective insole. Can be trimmed easily.