These are very popular soft quilted spare pants with attached belly warmers from Nishimatsuya, sold every year! They have been used, so this is for those who understand that they are used items ^_^ Set of 2. Main body: 100% cotton Filling: 100% polyester Belly warmer & Rib: 95% cotton, 5% polyurethane Quilting Pants with belly warmer Gender...Boy Season...Autumn, Winter