Sweat-Free Exterior: Double wall insulation prevents condensation and keeps beverages hot or cold for hours Leak-Resistant: Comes with Straw Lid and Flip Lid for a leak-resistant experience. Two straws included, one color-matched and one clear Tritan plastic Durable: Made of premium 18/8 stainless steel Cupholder Friendly: Tapered shape makes this tumbler cupholder-compatible US Patented