Made Of Stainless Steel With Copper Plated Inner. Double Wall Construction For Insulation Of Hot Or Cold Liquids. Screw On, Spill-Resistant Lid With Easy Carry Handle. Wide Mouth Opening. Vacuum Insulated. Keeps Drinks Cold Up To 24 Hours And Hot Up To 3 Hours. Fits Comfortably Into Backpacks, Diaper Bags And Cup Holders. Non-Slip Bottom. Removable Silicone Base. Condensation Free. Swig LifeTM Is A Certified SWaM Owned Business. BPA Free. Dishwasher Safe. Meets FDA Requirements.