Hydrate your way. With our game-changing dual-function lid, you get two ways to drink: a No-Perse soft straw for easy sipping, or a wide-mouth chug spout when you want to refuel and go. You choose, every time, without having to switch lids. The venting technology prevents pressure build-up, and the water-level window helps you stay on top of your goals. Finished with a non-slip base, soft-touch carry loop, and premium double-wall stainless steel, the Ease2o is hydration without compromise. Key Features: 40 oz Dual-Function Lid (No-Perse Soft Straw & Chug Spout) Lid Locking Mechanism Cup Holder Friendly Venting Technology Water-Level Window Rubber Base Soft-Touch Carry Loop Double Wall Stainless Steel Leakproof BPA Free Dishwasher Safe