Features: Arch Support Orthotic Insole: Arch Support Insoles is designed for flat feet. Arch support helps minimize pressure to whole feet and make the foot well-distributed. Long-lasting Comfort and Pains Relief: The U-heel stabilizes the feet and improves balances, which makes the body alignments, preventing the feet pronation. Unique Arch Support Technology: Designed arch support molds to the feet due to the unique flexibility and compressibility, so it can fit with shape of most arches. Cushioning Material: Offer you the cushioning during the feet movement. When your feet steps-on outside, the insoles helps reduce the impact on the feet, ankles and joints. Fit and Applicable Shoes: Since arch insoles are generally thick than ordinary flat insoles, therefore they need shoes that have enough spare room. Specifications: Material: VEA+TPR Color: Gray/Black/Blue Size Options: S/L S Size: approx.27x9x3cm/10.62x3.54x1.18in L Size: approx.29x10x3cm/11.41x3.93x1.18in Package Includes: 1 Pair Shoe Insoles note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!