100% Acrylic Imported Pull On closure Breathable Elastic Fabric Outer Material Is Polyester Fiber, Elastic And Soft Inner Material Is Polyester, Breathable And Comfortable Baby Shoes. The Top Elastic Cuff Design Provides A Comfortable Fit, And The Opening Is Elastic For More Convenient Donning, Making It Easy To Put On And Take Off Children Walking Shoes. Measuring The Size Remember To Measure Your Baby's Feet Before Buying This Baby Shoe, Then Choose The Right Size According To Our Size Chart. Our Service The Best Product And Service For You! You Can Contact Us For Any Unpleasant Reasons. Children's Non-slip Rubber Sole Is Flexible To Help Your Feet From Stepping On Rocks And Stones, And The Comfortable Fabric Allows Toddlers To Walk Indoors.