4 gallon Backpack Cooler Zip top allows cooler to remain fully open while being filled Tri cool Technology features triple-layer construction with closed-cell foam lining that provides maximum insulation without adding extra weight Two Swig-Sized pockets with magnetic snaps Secure waterproof zipper pocket that is perfect for your phone, keys, and valuables adjustable straps 📷 Regular uploads. 🚭 Smoke and pet free household. 🛁 All items freshly washed prior to posting. 💰 All prices negotiable. Open to reasonable offers. And bribery. ✉️ Very responsive to messages. 📮 Regular parcel drops throughout the week.