The Velcro closure makes the shoe more stable and ensures full comfort during play and activities at home and outdoors. Made of cotton fabrics that are gentle on delicate baby skin and at the same time very resistant to abrasion. The lightweight, flexible, nonslip and ventilated sole ensures hygiene and comfort of use. The shoes have a mark of originality, i.e. a yellow element in the sole. The slippers are certified and recommended by orthopedists. When choosing a size, please refer to the size chart.2516/2616.5/2717.5/2818/2918.5/3019.5/3120/3221/3321.5/3422/3522.5/3623.5 cm.