When 12 oz. just isn't enough, check out the 20 oz. Kanteen Vacuum Insulated bottle. Durable, double-walled construction and vacuum insulation assures that beverages stay hot for up to 6 hours, while iced drinks stay frosty for more than 24. Equipped with a leakproof Stainless Loop Cap, you can clip it onto your bag or throw it inside without a second thought. Weight: 10.25 oz.