These shoes made of rubber which durable and . Its Anti-slip design which can prevent your kids safe and the lightweight design make them feel comfortable. Its thick arch-support inside of them for a comfy shock absorption which protect from injures by stepping on hard objects. Feature - Color: Blue. - Material: Rubber. - Size XS: 14.5cm(Inside length); 12.5-13.8cm(Suitable foot length); - Size S: 16cm(Inside length); 14-15cm(Suitable foot length); - Size : 17.5cm(Inside length); 15.3-16.3cm(Suitable foot length); - Size L: 19cm(Inside length); 16.7-17.5cm(Suitable foot length); - Size XL: 20cm(Inside length); 18-19cm(Suitable foot length); - Size XXL: 21cm(Inside length); 19.3-20.3cm(Suitable foot length); - COMFORTABLE MATERIAL: Made of soft durable, soft friendly hight quality material. quick drying and breathable, comfortable to wear. Not stuffy, No smell. - CONSIDERATE SAFETY DESIGN: Anti-slip rubber sole with honeycomb pattern prevent slipping during exercise and sports activities and protects your baby feet from being hurt by sharp objects. - PERFECT WEARING EXPERIENCE: Super lightweight and flexible just like socks. fabric upper with overlays provides a close, supportive fit, keep shape of foot pretty without distortion. - OCCASIONS: Various size water shoes are designed for toddlers, little kids, big kids. Perfect for water park, swimming pool, beach and other indoor and outdoor leisure water sport activities. - A lightweight breathable kids water shoes, Quick drying, excellently flexible and comfortable. - Warm Tip: Dear buyer, Due to lighting effect,monitor’s brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand! Thank you! Package list: 1 pair of shoes