Rubber sole MATERIAL: Breathable Mesh Work Upper, Non-slip Flexibility EVA Sole. Shoes are made of high quality material , durable and provide the protection from rough surfaces and dirty floors. SIZE : Suitable for 1-4 year-old children. US 6.5: Insole length: 14cm(tag size:22); US 7: Insole length: 14.5 cm(tag size:23); US 7.5: Insole length: 15 cm(tag size:24); US 8: Insole length: 15.5 cm(tag size:25); US 9: Insole length: 16 cm(tag size:26); US 9.5: Insole length: 16.5 cm(tag size:27). In order to avoid the shoes size is too large or small to your kid, we recommend customers choose shoes with insole length about 0.3~0.7cm longer than the foot length of your child. NON-SLIP: Perfect for use indoors and especially on hard surfaces like wooden and laminate flooring. When babies and toddlers are on the move they need shoes that are lightweight and flexible. EASY WEAR: Slip-on, Easy to put on and take off for little kids by themselves . The simple classic design makes your kids more fashionable. OCCASION - Fashion style adorable shoe looks great with any outfit. Dress them up with frilly socks or just have a pair for playground fun! Whether it is playing, jumping, or running, climbing , this shoe can handle it all.best first birthday gift ever.