The Santeco KTWO is a double-wall vacuum-insulated water bottle made from food-grade 18/8 stainless steel with BPA-free parts. It is rated to keep drinks cold for 24 hours, and it does not sweat with cold drinks. The wide mouth makes it easy to fill, add ice and clean. Its lid has a rope lanyard that secures the cap and gives a hands-free way to carry the bottle, and a small spout cap for drinking directly. This is the 710 ml size in Midnight Blue. Ideal for hiking, the gym, school, work or a day at the dam. Hand wash only; do not put it in the dishwasher, microwave or freezer.