Made Of Stainless Steel With Copper Plated Inner | Patented Texture Finish | Patented Texture Finish | 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 | 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