Ogio - Mach 3 Motorcycle Backpack with No Drag TechnologyA step up from the Mach 1, the Mach 3 boasts our bolstered back foam to increase ventilation, soft neck shoulder straps that don't dig in when picking up speed, and a 360 retro relfective safety piping and logo. The personal electronics pocket comes fleece lined, while the added shoe storage compartments make professional commuting a breeze. What's more, the Mach 3 has a removable helmet carry strap and a padded tablet sleeve in addition to the laptop