One pair of insoles for flat foot correction, heel cushioning sheet, U-shaped heel design, high arch support. The pair of insoles are light elastic and breathable to wear, cuttable size. Features: Heel cushioning sheet, high density, fine and uniform cell structure, well compression deformation resistance. U-shaped heel design, to fix the neutral heel position, wrap around the heel to prevent the heel from slipping, better correcting. Light elastic EVA eco-friendly material, premium ultra-fine velvet cloth, punching holes are breathable and not stuffy feet. Auxiliary code segment trim line, cut out the size that suits you. High arch ankle protection, light elastic arch support. Specifications: Material: EVA + Velvet + PORON shock absorber Size: XS(21~24), S(25~27), M(28~30), L(31~33), XL(34~36) (optional) Item Size: XS: 150 * 68mm / 5.91 * 2.68in S: 170 * 72mm / 6.69 * 2.83in M: 190 * 76mm / 7.48 * 2.99in L: 210 * 80mm / 8.27 * 3.15in XL: 230 * 83mm / 9.06 * 3.27in Item Height: 40mm / 1.57in Package Weight: XS: 38g / 1.34ounces S: 42g / 1.48ounces M: 48g / 1.69ounces L: 53g / 1.87ounces XL: 58g / 2.05ounces Package List: 1 * Pair of Insoles