Insulates hot beverages up to 6 hours Insulates iced drinks up to 24 hours Durable, double-walled construction High performance vacuum insulation Slim design fits in most cup holders Made of 18/8, food-grade stainless steel, no liner needed 100% stainless interior (18/8 stainless caps) Extra-wide mouth (2.125") No BPA, phthalates, lead, or other harmful substances Doesn't retain or impart flavors Rounded corners are easy to clean External, stainless steel threads Works with standard backcountry water filters Reusable & recyclable Easy to hand wash Capacity: 16 fluid ounces (473 ml) Weight: 8.75 ounces (w/o cap) Size: 7.25" H (w/o cap) x 2.9375" W Opening diameter: 2.125” (54 mm)