Made Of Stainless Steel With Copper Plated Inner | Patented Texture Finish | Double Wall Construction For Insulation Of Hot Or Cold Liquids | Snap-On, Spill-Resistant Thumb-Slide Lid With Removable Slider For Easy Cleaning With Flexi-Straw | Vacuum Insulated | Keeps Drinks Cold Up To 24+ Hours And Hot Up To 9+ Hours | Perfect For Golf Enthusiasts | Non-Slip Bottom | Removable Silicone Base | Condensation Free | Swig Life Is A Certified SWaM Owned Business | Women Owned | Meets FDA Requirements | BPA Free | Dishwasher Safe