• PREMIUM STAINLESS STEEL TUMBLER: COKTIK 40 oz insulated tumbler is made of 18/8 food-grade stainless steel with double-walled, it is no BPA and non-toxic. Electro-polished interior doesn't transfer flavor & no metal aftertaste, you don't have to worry about your morning coffee or tea
• LEAK PROOF TUMBLER: Our COKTIK 40 oz tumbler features a 100% airtight spill and double-threaded twisting design, keeps the cup completely sealed and sweat proof. You can confidently carry it with you wherever you go
• 30 HOURS COLD/NO SWEAT: The stainless steel tumbler with double-wall vacuum insulation, you can enjoy your favorite drinks cold for up to 30 hours and hot for up to 10 hours, and it won't sweat! Savor every sip without worrying about the temperature of your drink
• CUP HOLDER FRIENDLY: COKTIK 40 oz travel tumbler fits perfectly in any car cup holders, making it perfect for your daily commute or your next workout.Tumbler also has a humanized design silicone sleeve and handle, easy to drink directly or through a straw, on-the-go hydration
• CUSTOMER SERVICE: We stand behind the quality of our products and are committed to putting our customers first.If you have any quality issues with the tumbler, please contact us and we will provide after-sales service