Made Of Stainless Steel With Copper Plated Inner. Patented Texture Finish. 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 Golf Enthusiasts . 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 .