This crochet bikini set is handmade with 100% cotton yarn. The stitches are very dense and tight. It is comfortable to wear in and out of the water. Please feel free to contact with me if you need to customize the size and color. Please let me know if you have any questions. I will be always glad to answer your questions. CARE: Hand wash cold water only, lay flat to dry. "OR" Machine wash on gentle cycle only with cold water, lay flat to dry. Never put your handmade item in a dryer! Thank