Corkcicle 9-Ounce Classic Canteen If you're looking for a smaller water bottle that will stay cold for hours, opt for the Corkcicle 9-Ounce Classic Canteen ($20). It's as cute as it is functional. Image Source: corkcicle.com Corkcicle 9-Ounce Classic Canteen $20 from corkcicle.com Buy Now