This tumbler is built for the outdoors with a 100% leakproof lid, sweat-resistant technology, and durable construction to handle any adventure. The tumbler also features dual-wall insulation to keep drinks hot for 7 hours or cold for 11 hours, and it's BPA-free and dishwasher-safe. The tumbler includes a reusable straw and a cleaning brush, with a lifetime guarantee. Valentine Gift