Experience style and functionality with the BYSEI Insulated Tumbler, featuring a striking modern geometric pattern in vibrant teal and classic black. Designed to maintain your beverages at the perfect temperature, this tumbler keeps drinks hot for up to 8 hours and cold for up to 12 hours. The premium stainless steel construction ensures durability, and it comes complete with a crystal-clear, spill-resistant lid and a sturdy reusable metal straw—ideal for life on the move. Available in a convenient 20 oz size, it's the perfect choice for morning coffee, iced tea, or refreshing water. Elevate your hydration routine with this eye-catching, versatile tumbler.