The Ortlieb Back Roller Classic QL2.1 Pannier pair. The lightweight, durable and waterproof panniers have been designed to conquer the most rugged and challenging bike tours. Back Roller Classic panniers feature the Ortlieb QL2.1 mounting system for secure and simple attachment to almost any rack. The back roller classic takes the name from the way that the bag closes. They roll up, with a single clip and strap holding them shut. It\\\'s basic, but it works very well, the roll prevents water from getting through while allowing enough slack to accomodate larger loads. The top hooks open and close when you lift the carry handle, which makes attaching and removing them a doddle. No matter whether you ride through forest tracks or desert roads, across canyons or rivers, the extremely durable outer fabric has proven its strength in numerous real tests. These are not the only reasons why the all weather solution was awarded several times by the bicycle press: hermetical roll closures, shoulder straps and the Ortlieb QL2.1 System ensure that food and equipment are not only protected 100% but also easliy accessible at any time. Overall the Back Roller Classic Pair are one of the best panniers on the market and will happily keep the content of the bag dry and safe. Key Features Sides of PS 490 nylon material, front and back of PD 620 QL2.1 system for racks up to 16 mm 20 mm hook available as separate accessory (e.g. for e-bikes) Including reduction pieces for tube diameters 8, 10 and 12 mm; with anti-scratch function reducing abrasions on rack Top QL hooks and lower sliding hook adjustable without requiring any tools Lower hook rail made of two-component hard-soft synthetic reduces abrasions on carrier Including integrated inner pocket and shoulder strap Can be used individually (e.g. for shopping, sports, picknick) Highly reflective Scotchlite reflectory