The 30L DB Hugger Backpack securely and comfortably carries all day gear with its clean, streamlined silhouette.. Db's Rib Cage technology adds extra protection to our backpacks with lightweight ABS ribs which retain the weight of things and at the same time protect from impacts. We also love the roomy top pocket for easy access to our toys and devices plus an internal mesh pocket which helps keep our things in order while commuting or traveling.