Double Wall, Vacuum Sealed, Copper Lined, 18/8 Stainless Steel Bottle With Jacquard Woven Leash Strap. TSA Compliant Size For Carry-On Bags Perfect For Traveling With Liquids, Medicine, Or Other Valuables. Keeps Beverages Hot For 12 Hours, Cold For 24 Hours. Top Screw Lid With Integrated Leash And Spill Resistant Sipper Slide. Powder Coating On Body For Extra Grip And Color Accent. Top Screw Cap With Integrated Xactknit™ Jacquard Woven Leash.