Waterproof brief case for cyclists with QL2.1 system and roll closure. The Office-Bag is a practical and reliable bag for daily use. It features the proven ORTLIEB QL mounting system for fixing to the rack: it can be taken off the rack with one hand. The dust and waterproof roll closure ensures safe transport of papers and laptop to work or school. No matter which weather. Two internal pockets ensure organising small items and keeping things in place. The Office-Bag comes in size L with 21L/1282cu.in can easily store one or respectively two folders plus the additional small stuff required for office or school such as calculator, notebook, cell phone, pens, lunch, thermos, etc. The extremely durable fabric and the convenient roll closure ensure 100% waterproofness for files and documents, even in heavy rain fall. The ORTLIEB QL2.1 system allows fast and easy single-handed mounting and removal of the panniers, and is suitable for racks with a tube diameters up to 16 mm (hook inserts for diameters of 8, 10 and 12 mm are included). Once the panniers are hooked into the rack, the mounting components close automatically. For taking off the rack you simply lift the handle. A 20 mm hook is available as optional accessory. The hook rail on the lower rear side of the pannier that serves for additional fixation is made of a two-component synthetic combination with anti-scratch function. This reduces abrasions on the carrier and prevents damage to the rack tubing. Thanks to the QL2.1 mounting hook rotatable in 45° steps the system is compatible with almost any bike rack. Base feet and edge protection safe the bag at the bottom and at lower corners respectively. The ergonomic design of the removable shoulder strap prevents sliding of the bag off your shoulder. Two large reflectors provide additional safety in dawn and at night. Ortlieb - Office-Bag 21l QL2.1 Rear Pannier black