Cocktail sophisticated, outdoor durable. The 350ml Tumbler is constructed in double-walled, vacuum-insulated stainless steel, keeping hot drinks cozy and cold beverages chilly. It’s topped off with a tri-mode lid for flow control so you can sip at your own speed. The heavy-duty powder coat is scratch resistant and allows you to toss the tumbler in the dishwasher when you’re finished. A non-slip silicone pad on the base grips surfaces to avoid scratches and spills. Free of BPA, BPS, and BPF.