Coffee Cup are double walled and vacuum insulated, which keeps your favorite beverage hot or cold for hours.the insulated tumbler is durable, easy wash and unbreakable. Made of high-quality food-grade 304 stainless steel, keeps the beverage without odor. The coffee tumbler comes with a safe BPA-free lid for spill-proof and a reusable straw to help you stay neat. The wide mouth opening allows easyly washing and quick filling, you only need to fasten the lid to prevent leakage anytime and anywhere.