SOWAN Baby Leg Warmers, Set of 3 As described in image 7, there is a small amount of rubber protruding on the inside from the time of purchase. There is some pilling from washing, but there are no stains or fraying. Quoted from the official website: ■Material 100% organic cotton *Separate rubber thread is used ■Country of Origin Made in Japan ■Size Width: approx. 6cm Length: approx. 23cm Suitable size for newborns to 2-year-olds *May vary by 2-3cm depending on the production lot. Please note. ■Product Description Can be used all season long for summer air conditioning, winter layering, etc. When worn stretched out, they protect the knees, so they are very convenient when babies start crawling or scooting. Gentle on the skin and made with pesticide-free materials, so you can use them with peace of mind for your baby. Purchase without comments is welcome ◎ If you have any concerns or questions, please feel free to contact us in the comments. Thank you for reading to the end. Dull colors Organic cotton Rib knit Leg warmers