NeatPack Durable, Foldable Nylon Backpack/Daypack with Security Zippers, 20L Unique Security Features: Concealed bottom zip pocket is great for storing valuables on the go. Zippers can be bound together securely to the D-ring with a cable lock or carabiner to deter theft! Spacious, Yet Folds Up Small: Roomy, foldable 18x10 daypack folds up small into the included 8x8 pocket for easy transport & space saving. Perfect for travel, hiking, camping & more! Rugged RipStop Nylon: Made of lightweight, water resistant nylon that holds up to wear & 2-way, abrasion resistant SBS zippers with pulls. Lightly padded, adjustable shoulder straps. Handy Rings for Attaching Stuff: 2 D-rings are attached to bag with reflective fabric safety loops. Great for clip-on carabiners and other types of gear (fast-access convenience). 100% Lifetime Guarantee: Register your packable backpack on our website to be eligible for our lifetime guarantee. This is the last backpack youll ever need!