We have used this for rappels. You can fit 4 helmets and harnesses in it for a group or hold a 300' rope with extra gear. Have used it on ATV access areas in mud and dirt, design makes it easy to stow on ATV and keeps the contents clean and dry.
Was dubious about the pack straps, but they actually work and were more comfortable than anticipated on a few hour hike. Free standing design with stiff sides make it easy to fill. Everything seems built to last years of hardships. Not waterproof, but... if you throw a plastic bag over the top in a storm, the contents stay dry.
I mean that in more ways than one! Just moving naturally or deliberately cleaved slabs and boulders to access climbing boulder-problems is a challenge requiring sequential, incremental leveraging, lifting, and releasing. Often enough, wearing a helmet is pointless— when and where being crushed is the potential to be avoided!
I've used this pack for hauling chains, winch, hard-rock mining tools, a hydraulic jack and the usual alpine hardware to develop granite bouldering spots inconspicuousl...y in the foothills and high-country around Santa Fe.
It's the only pack that is constructed and sized for portaging compact, awkward and painfully heavy hardware making it possible to move 500~2000 pound granite blocks (slowly and carefully).
My only complaint is that the flap designed to keep the shoulder straps from shredding (when hauling) chafes the nape and upper shoulder area, so I trimmed the flap just enough to fix the issue.
Made of nearly indestructible dirt-colored haul-bag material.
Black Diamond Stubby Haul Bag This small bag, with a big wall is ideal for any one-day aid climbs or as a second bag. Its spacious cargo space easily holds the extra gear that you need for a whole day of climbing without taking up excess space or weight. A stowable shoulder strap eliminates snags while hauling to provide better efficiency when packing your things. Black Diamond Stubby Haul Bag is a great little haul bag for single day routes or as a secondary haul bag on a big route. Like its bigger siblings, it s made from tough vinyl fabric to avoid abrasions, a padded removable waist belt to give you better options for added flexibility, and tuck away shoulder straps to avoid snags. It has a simple one piece suspension system and a water-resistant closure to keep your things dry. This haul bag also has a zippered pocket for those must-not-drop essentials. The Black Diamond Stubby Haul Bag simply keeps your gear intact for those long trips.