Ships from Hong Kong. Protect little darlings'knees from bruises and scrapes when they are curiously crawling. Make crawling more comfortable for your baby with these safety knee protectors. It is breathable, soft, flexible and resilient, encourages your child to crawl properly. Just prepare a pair for your baby when she/he is learning to walk. Dimensions: the length is 13cm, the width of the bottom is about 7cm, can be stretched to about 13cm.