Okay, is there anything that the Atrack 45 backpack from Ortlieb can't do? In terms of features, functionality and load capacity, it's a real all-rounder with which you can easily master alpine challenges, go on trips or throw it on when biking. The completely waterproof material is pleasantly light, yet very robust. An extra-long TIZIP zip runs across the entire back and allows you to open the backpack completely. The zip is also extremely tight, so you can throw the bag into the water and paddle on it through the Isar if you feel like it. Thanks to the daisy chains and the height-adjustable compression straps, you can attach various equipment to the outside. Bottles can be stored in the mesh side pockets and there are other small compartments inside. The carrying system of the Atrack 45 backpack is also very good. Well-padded and ergonomically shaped, you can even adjust the back length to suit you. The Atrack can be upgraded to a fully equipped high altitude and ski touring backpack with an optional helmet mount or universal mount.