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. Non-Slip, Scratch Free Silicone Base. Condensation Free. Fits Comfortably Into Backpacks, Diaper Bags And Cup Holders. Swig Life™ Is A Certified SWaM Owned Business. BPA Free. Women Owned. Dishwasher Safe. Meets FDA Requirements.