The Millet M White 22 ski touring backpack pairs a sealed roll-top main compartment with a full-length side zip so the pack can be cracked open mid-run or fully unloaded at the trailhead without removing it. The removable helmet holder and side and diagonal ski attachment handle the boot-pack-to-skin-track transition without improvising. What Our Gearhead(R) Experts Are Saying:"The roll-top plus full-length side zip is the combination I actually want on a ski tour. I can crack the side zip for a quick layer grab without unpacking the whole bag."