Come and Check Our Promo Solutions.This 15 oz mugs are made of organic bamboo and stainless steel, giving them a unique and stylish look. This cup is designed to retain fluids at perfect hot/cold temperatures. Double walls of stainless steel will keep your drink at optimal temperature for up to 6 hours. No scratches forever on the real bamboo,good Hand feel and handle design, when you hold will find cool and is easy to take with the handle. Pls check inventory and detailed info with us before placing your orders.