The 590ml Signature Swig Life Bottle keeps drinks cold up to 24 hours and hot up to 12 with its double-wall, vacuum-sealed copper coated insulation. The non-slip silicone base keeps your cups from tipping or making too much noise when you set them down. The stainless steel screw top features a flip ring for easy carrying and the rubber gasket ensures a tight seal to keep your bottle from leaking while on the go Dishwasher Safe! Non-Slip Silicone Base - Patent Pending Copper Coated Insulation Double-Walled & Vacuum-Sealed Condensation Free Cup Holder Friendly... (Read more)