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