BUILT double wall insulated stainless steel 30 oz tumbler - Black Marble This BUILT Double Wall Tumbler is an ideal choice for a chilled or infused water but also just as suited to hold a warm hot chocolate or coffee for the commute. It can keep your drinks cold for 24+ hours or hot for 6 hours. The threadless lid has been molded from Tritan, a hard wearing and reliable plastic which will not fail you on your busy day. Effortlessly slide open or closed with one-hand, making drinking on-the-go a breeze. The main body of the tumbler has been crafted from double-wall stainless steel. The double-wall construction ensures both hot or cold drinks can be kept at optimum temperature for longer. The Tritan lid separates into two parts for easy cleaning. Hand-wash with warm water and a mild detergent; rinse and dry immediately. Sized to fit in most standard cup holders. Food and Lead Safety tested plus it?s PVC, BPA, latex and phthalate-free and holds 30 ounces. With every BUILT reusable tumbler purchased, you save money, keep hydrated and reduce plastic waste. Buy with confidence. Check out our reviews.