GearJunkie Reviews the OutThereUSA AS-1 pack dubbing it as the "Ultimate Adventure Racing Backpack"
"The AS-1 provides this never-take-the-pack-off accessibility better than almost anything I’ve seen. There are four zip pockets, four water bottle holders, two hydration-hose ports, a whistle, and several attachment points — all reachable on front. On an adventure, you can cram a half-day’s worth of energy food, a compass, lip balm, and other essentials in the pack’s up-front holsters and hip-belt pockets."
"The multifunctional nature continues on back. There are compression straps for skis, snowboards, and other equipment; ice axe and trekking pole loops and attachment straps; a map pocket; tabs on the bottom of the pack for attaching camping gear; and multiple zippered and mesh pockets."
Read the full review here : https://gearjunkie.com/mike-kloser-adventure-racing-backpack