Model number: seamless bra We have more than 12 years to develop underwear and our leading item such as:men's and ladies's seamless underwear and have to develop commonly underwear,briefs,boxer,sexy G-stirng,T-shirt and so on. We have two production line one is the seamless underwear,the other is the knitting underwear,we will inrtoduction the material for you like below. Seamless underwear material usually nylon/spandex,cotton/nylon/spandex Knitting underwear material usually is 95%cotton+5%spandex,100% cotton,100%polyester