Swig Life Prep Rally Packi 24 Backpack Cooler - NWT - Keeps contents cold 48+ hours - Dual zipper pulls - Wireframe design opens fully to allow for wide access - Exterior, PVC-coated polyester shell is waterproof, wipeable and puncture-resistant - Secure back zippered pocket - Measures: 11.5" W x 6.5" D x 15.5" H - Weighs 1.8 lbs when empty - Capacity: 3.5 gallons (16 liters)