Shop Klean Kanteen 12oz Kanteen Wide Insulated. From lunch boxes to lattés, the 12oz Kanteen® Insulated`s small size gives you ultimate versatility and performance. Load it up with chunky stew or ravioli for a hot lunch today. Then take it with you on the road filled with a few shots of espresso or a small cappuccino. Its compact size makes it the perfect container for food and also a great mug. Double-walled vacuum insulation keeps contents at stable temperatures, up to six hours for hot stuff and more than 24 for iced drinks. Made from BPA-free, food-grade, 18/8 stainless steel, cleaning takes just a quick scrub with warm soapy water. With an all-stainless interior and no liner, you won’t have any lingering flavors either. The leakproof Stainless Loop Cap gives you peace of mind if you want to toss it in a bag or lunch box. You can drink straight from the bottle, which has a cup-like feel and comfortable narrow rim, or order a sleek Café Cap to convert it into an awesome to-go mug.