EcoVessel Boulder Northern Light Insulated Bottle, 20oz The BOULDER vacuum insulated water bottle is a flagship bottle that will keep you drinks hot or cold all day long. Made from premium 18/8 stainless steel, it features our signature TriMax Triple Insulation and keeps drinks cold up to 60 hours and hot up to 12 hours. The Reflecta lid is insulated and lined with stainless steel, enhancing temperature retention and preventing drinks from ever touching plastic. The dual opening lid is easy to grip, has a wide mouth for easy filling, and a soft silicone spout for a comfortable drinking experience. The lid is securely attached to a sturdy carrying strap and the leakproof seal keeps your drinks in the bottle - where they belong. The BOULDER stainless steel water bottle also includes a removable strainer for tea, fruit, and ice cubes. The fitted silicone bumper adds protection against everyday drops. Plus, using a reusable water bottle cuts down on single-use plastic consumption.