The perfect daypack for your alpine tours, the smallest of the Trion series serves up lightweight comfort and exceptional durability in the close-to-body fit of a trail running vest. Water- repellent and abrasion-resistant, our full Trion line was developed with pro alpinists Stephan Siegrist and Nico Hojac to optimize every last detail. Made of primarily recycled materials, the Trion 15 offers unmatched freedom of movement, a zippered roll-top closure, and quick side access to the main compartment.