Material - Soft safety fabric material. Warm, Comfy, Soft Bottom and Lightweght fit for pre-walker, crawling, Learning to Walk. Size Tips - Please measure baby's feet first and choose correct size refer to our size chart, the age groups are just as reference. Easy On and Off - Elastic Adjustable Closure baby booties is Easy to put On and Off, and they will stay on your baby's feet. Best gift - Stylish Adorable Cartoon baby socks shoes is the Best Shower Gift for Newborn. Great for daily use and make a perfect Baby Shower, Birthday Present.