Elevate your on-the-go beverage experience with the 20 oz. iCOOL Lewiston Double Wall Stainless Steel Tumbler. Wherever life takes you. Crafted with a premium 18/8 stainless steel, copper lining and vacuum insulation to ensure exceptional temperature retention, this tumbler keeps your drinks cold for up to 16 hours and hot for up to 8 hours. The clear AS lid has a convenient slider closure, making it perfect for travel, commuting, or outdoor adventures. The durable powder coat finish not only provides a sleek and stylish look but also enhances grip and scratch resistance, ensuring your tumbler looks great for the long haul. BPA free and FDA compliant. A portion of all proceeds is donated to Shelter to Soldier, a non-profit organization that rescues dogs to train as service animals for veterans in need.