Whether we're snagging a summit or harvesting backcountry powder, when there are glacier traverses, ice walls, and couloir rappels that stand in our way, we pack along Mammut's Aenergy Harness. The color-coded, removable construction lets us start off bare and rope up later without having to remove our crampons or skis, while the featherweight materials withstand cruel conditions and give us both walking and hanging comfort without a heavy, bulky build.