Applicable gender: neutral/both boys and girls; Applicable age: infants (1-3 years old); Upper material: synthetic leather; The wide toe box gives the feet ample space for movement; The anti-kick large surround design protects the baby's feet to a greater extent, so that mothers can rest assured; High-quality synthetic leather fabric, waterproof and easy to scrub; Strengthen heel shaping, fit the heel, and protect the ankle; Rubber outsole, soft and moderate, stable learning steps, non-slip and wear-resistant; [Size-Inner Length]: 16 - Inner Length 12cm; 17 - Inner Length 12.5cm; 18 - Inner Length 13cm; 19 - Inner Length 13.5cm; 20 - Inner Length 14cm; 22 - Inner Length 14cm; 23 - Inner Length 14.5cm; 24 - Inner Length 15cm; 25 - Inner Length 15.5cm; 26 - Inner Length 16cm;