The Healthy Human Stainless Steel Tumbler with Straw and Lid is a must-have travel companion for those who want to keep their beverages at the perfect temperature all day long. This tumbler is not just your ordinary travel cup it's designed to keep liquids cold or hot 2 times longer than traditional mugs or plastic cups.Crafted from 100% premium food-grade 18/8 vacuum insulated stainless steel, this tumbler features Healthy Human's innovative TempMax copper-coated insulation. This advanced double-wall vacuum insulation technology ensures that your drinks stay icy cold or piping hot for an extended period of time. Say goodbye to lukewarm beverages with this tumbler by your side.Aside from its impressive insulation capabilities, the Healthy Human Cruiser tumbler is also eco-friendly and sustainable. Healthy Human is a certified B Corporation, committed to making a positive impact on the environment