The rugged Perka Wayfarer Stainless Steel Mug is double walled 18/8 stainless steel and holds 24 oz. of your favorite beverage and will keep it hot for 10 hours or cold for 18 hours. Great for camping or backyard morning coffee, it is vacuum sealed, copper lined and has a powder coated exterior and handle. This has a clear push-in lid with sliding closure that is easy to sip from and it is FDA compliant and BPA free. 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.