KeepCool Blue Shopping Cooler Backpack 52 L (about 13.7 gallons), measuring approximately 20.5 × 16.5 × 9.4 in. Keep your groceries and perishables fresh with this KeepCool Shopping Cooler Backpack. This backpack is designed to keep your food and drinks cold for up to 8 hours, making it perfect for grocery shopping. picnics, or any outdoor activity. #coolers #grocery #backpack #perishables