Capacity & Insulation: This 40oz (1.18L) tumbler is made with recycled stainless steel and features double-wall vacuum insulation to keep drinks cold for hours, or even with ice for longer periods. FlowState Lid: The advanced lid has a rotating cover with three positions: a straw opening with a splash-resistant seal, a drink opening, and a full-cover top for added leak resistance. Design & Portability: It features an ergonomic, comfort-grip handle for easy carrying and a narrow base designed to fit most car cup holders. Maintenance: The tumbler and its lid are dishwasher-safe for convenient cleaning.