A comfortable, well-ventilated, compact trekking & hiking pack, with reduced contact surface and split shoulder straps for increased breathability and twin compression system for load control.
Here's what other sites are saying:
The Alp Trainer 25L Backpack is the smallest alpine pack in Salewa's collection of technical trekking packs, and as such it best suits minimalist alpine hikers or someone training for the alpine in lower altitudes. Its Air Fit 2. 0 carry system reduces surface area so less of the pack is on your sweaty back, and what material does touch your back includes built-in ventilation and cushy foam for a comfy ride. The rain cover shields your valuables from wet weather, while the hydration sleeve separates your drinking water from your gear too. Salewa also added attachments for trekking poles so you don't have to hold onto them the entire time.
Salewa Backpacks & Bags Alp Trainer 25L Backpack Ox Blood One Size 0000000012301910. Featuring an Air Fit 2.0 carrying system the Alp Trainer 35 is designed with minimal body contact in mind. Lightweight split shoulder straps are designed for comfort and breathability. 3D channels in the foam pads permit air to flow freely over the back without compromising load control.