My Clear Backpack Lunch Bag - Medium PVC Need to pack a bigger lunch? Max out your meal with our six-pack sized (medium) lunch bag. Large rectangular design holds multiple food items When used with a cold pack (not included), partially insulated design helps keep food cool for hours. 18 & 12 long zippered flaps for easy open access. Padding in adjustable shoulder strap. Constructed out of 5 Mil. PVC Luggage: Travel Coolers Coolers & Insulated Bags