Made Of Stainless Steel With Copper Plated Inner. Patented Texture Finish. Double Wall Construction For Insulation Of Hot Or Cold Liquids. Screw On, Spill-Resistant Sip Through Lid. Vacuum Insulated. Keeps Drinks Cold Up To 24+ Hours And Hot Up To 3+ Hours. Perfect For Golf Enthusiasts. Non-Slip, Scratch Free Silicone Base. Condensation Free. Fits Most Standard Cup Holders. Swig Life™ Is A Certified SWaM Owned Business. Women Owned. Meets FDA Requirements. BPA Free. Dishwasher Safe.