NWT Owala 32oz FreeSip Stainless Steel Water Bottle, SEA SALT Features *Double-wall vacuum insulation keeps your beverages cold for up to 24 hours *Stainless steel construction offers long-lasting durability *FreeSip® lid includes a built-in straw for easy drinking *The wide mouth opening lets you take bigger swigs and easily fits ice cubes *The lid flips open with a button and locks shut for easy transportation *Leak-proof design helps avoid any unwanted messes and spills *Hinged loop flips up for easy carrying and tucks away when not in use *Base fits most cup holders *BPA and phthalate free