Custom Tumblers & Travel Mugs, Perka Wayfarer 24 oz 304 Double Wall Stainless Steel Mug - Vacuum Insulated & Copper Lined, The rugged Perka Wayfarer double walled 18/8 stainless steel mug 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. The Wayfarer 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. ... #KM8407 $27.88/each.