Upgrade your drinkware with our 20oz double-wall vacuum insulated tumbler, designed for everyday convenience and lasting performance. Made with a food-grade 304 stainless steel interior and a durable 201 stainless steel powder-coated exterior, this tumbler is rust-resistant, odor-free, and built for daily use. The clear slide lid features an easy push-tab design, allowing smooth one-hand opening and closing. Its slim base fits most standard car cup holders, making it ideal for commuting, office use, travel, gym sessions, camping, and outdoor activities. Thanks to advanced vacuum insulation, it keeps drinks hot for 6–8 hours and cold for 12–24 hours. Each tumbler includes a reusable aluminum alloy straw and a metal cleaning brush for added convenience. BPA-free and suitable for coffee, tea, juice, water, cocktails, and iced beverages.