Made Of Stainless Steel With Copper Plated Inner. Double Wall Construction For Insulation Of Hot Or Cold Liquids. Vacuum Insulated. Keeps Drinks Cold Up To 9+ Hours And Hot Up To 3+ Hours. Snap On, Spill-Resistant Thumb-Slide Lid With Removable Slider For Easy Cleaning. Perfect For Bourbon Connoisseurs. Non-Slip, Scratch Free Silicone Base . Condensation Free. Cup Holder Friendly. Swig Life™ Is A Certified SWaM Owned Business. Women Owned. Meets FDA Requirements . BPA Free.