Double-wall vacuum-insulated Stainless Steel Keeps contents cold for 24+ hours Keeps contents warm for 12+ hours Includes a color coordinated paracord, whistle, and compass Features an easy-sip straw lid and a protective anti-slip bumper buddy Powder-coated styles (laser engraved only), Silicone rings, straws and lids are dishwasher safe. Glitter and graphic styles are hand wash only 1-year limited warranty