The ortlieb track backpack is a waterproof backpack with a mesh carrying system and roll top closure bikers and tourers spend their time in the outdoors in any weather and cannot watch their gear all the time therefore a waterproof and dustproof backpack is a high priority for enjoying the trails and nature the track backpack proves it self in its construction the abrasion and tear resistant pu coated nylon fabric the watertight screwed connections of the back system elements and the wate