40 oz tumbler with leak-proof design and double-wall vacuum insulation - 18/8 food-grade stainless steel, BPA-free and non-toxic - Double-wall vacuum insulation keeps drinks hot or cold for hours - Exterior powder-coated finish is sweat-proof and easy to clean - Includes a lid and a reusable straw Premium quality and practical design - Interior electropolished for corrosion resistance and easier cleaning - Designed to fit in most car cup holders for convenient transport - Suitable for family, friends, and colleagues Performance and usage - Keeps drinks hot up to 8 hours and cold up to 24 hours - Temperature times may vary with environment and contents Care and safety - Dishwasher safe, though hand washing is recommended to prolong life - Do not use for hot beverages over 212 F Size, compatibility, and guarantees - Capacity: 40 oz - 100% satisfaction guarantee - If you have questions or concerns, contact us for assistance Use scenarios - Morning commute or office routine: keep coffee or tea hot through long meetings or drives - Travel, hiking, or outdoor activities: maintain cold water, juice, or sports drinks for extended periods - Home gatherings or shared spaces: convenient large-capacity option for beverages with family or friends