The Gaynor Minden Convertible tights are made of 85% Nylon and 15% Spandex. The company chooses to blend only the best yarns to create tights that offer the utmost freedom of movement and a soft luxurious feel. The tights have dyed to match crotch gussets, a soft-knit waistband, and carefully finished openings for the transitions of the feet. These tights run from adult small to x-large. If you are looking for the children's size, please look up the Mini Minden tights.