The Regatta Thermulate Insulated Tumbler 0.6L is built for on-the-go use with durable stainless steel. Its double-wall design keeps drinks cold for up to 12 hours or warm for up to 6. The convenient flip-top straw lid makes it ideal for commuting or everyday walks. The tumbler features a 0.6L capacity, a flip-top straw lid for easy drinking, double wall construction for excellent heat retention, and a leak-proof lid. It is made from 70% Stainless Steel, 25% Polypropylene, and 5% Silicone.