PVC sole is comfortable to wear. The Shoes are designed with soft strap to help your baby's feet to fit comfortably. Their Soft Nature. And Comfy, Just Right To Protect The Tiny Little Feet. These Shoes Help In Keeping The Soft Muscles, Tendons And Bones Of Babies Feet Safe And Warm. Soft And Comfortable Inner blind Cotton Cloth Easy On Your Baby's Soft Skin ,Thick Sponge For Better Comfort. Shoes and Velcro Closure Makes It Easy To Wear. The Adorable Colors And Star Print Adds Extra Cuteness To The Shoes.