2-IN-1 LEAK-PROOF LID: Use included stainless steel straw with silicone tip or locked sipping spout. The lid easily twists off to clean and add ice. VARIETY OF USES: The versatile shape and large capacity is great for the gym, the outdoors, or even staying hydrated at home. EASY-CARRY HANDLE: Ideal for transporting and sipping on the go. KEEPS DRINKS HOT OR COLD: This mug is insulated with durable stainless steel to keep drinks cold for 12 hours with ice and hot for up to 6. DURABLE AND FOOD-SAFE: High-quality stainless steel construction helps to prevent damage while transporting. Free from BPA & lead. Hydragear’s Sawyer Tumbler is made of durable, condensation-free stainless steel. Its unique 2-in-1 lid allows you to drink from a reusable straw or sip from the locking spout.