The 16oz Wide Insulated packs efficiency into a versatile 'just right' size, keeping contents hot up to 6 hours, iced up to 24. With a double-wall, all-stainless interior and no liner, flavors don't linger and cleaning is a cinch. The leak-proof Stainless Loop Cap gives you peace of mind if you want to toss it in a bag or lunch box. Features an extra wide opening that fits ice, and makes for easy pouring and filling.