fabric soleMaterial - These Baby Booties are made of Soft safety Cozy Fleece material. Warm, Comfy, Soft Bottom and Lightweght fit for pre-walker? crawling? Learning to Walk.Size - Please measure baby's feet first and choose correct size refer to our size chart, the age groups are just as reference.Easy Wear - Hook and Loop Adjustable closure easy to adjust size to fit your little one'feet. The Most importantly can stay on your baby's feet won't be kiched off.Best gift - Stylish Adorable baby slippers is Best Shower Gift for Newborn. Great for daily use and make a perfect Baby Shower? Birthday Present.Buy with complete confidence - We strive for 100% Customer Satisfaction. If for any reason you are not satisfied, please contact us and we will take care of you.