Sip hot and cold drinks maintained at just the right temperature, for longer with the matching midnight blue bottle and travel mug set from BUILT. With the high performance insulation and perfect seal technology, the 540 ml stainless steel water bottle keeps your drinks hot for up to six hours, and cold for up to 24. It's made of 18/8 rust-resistant stainless steel, so it's BUILT to be refilled and reused, day after day. This conscientious design helps to reduce your consumption of harmful single-use plastics. This insulated 590 ml travel mug boasts a double wall of insulation, which keeps chilled refreshments cool for up to 24 hours, and hot beverages warm up for up to six hours! It's ideal for staying hydrated when you're on-the-go. Topped with a threadless Tritan plastic lid, this travel cup can be slid open and closed with one hand.