The Orange Mud 12L and 20L packs both have the same footprint, chest harness, and materials, but they shrunk it down on the 12L to maximize stability and load management for journeys that require less gear. The load leveling system works amazingly well to stabilize odd or sloshy water bladders/bottles/gear in the bottom of the pack by compressing the back vertically. The shock cord layout on the back compresses horizontally too in case you have it packed really light.
The top of the bag opens through a military grade zipper and quick access to the divided cargo area and bladder.
The elastic chest harness works wonderfully for ladies and just as well for guys. Sizing is quite versatile too from the very petite up to about a 52" chest. If you fit the Endurance Pack, which works for 99% of users, you'll love this fit.
The front chest harness has soft flask storage of 450ml or 600ml. These are for optional purchase and can be purchased at this link. The two small pockets in front of the flask pockets are for gels/trash/etc. There are also two shoulder pockets for your phone, chapstick, and nutrition.
The rear compartment features bladder storage for up to 3L bladders. We prefer the 2L bladder, which it comes with.
The right side of the pack has a 9" long zippered opening for access to maps, jackets, headlamps. The size of the pockets reaches across the pack, so you can really load it up. It's integration inside the pack also creates a divider when loading gear from the top.
The left side of the pack features a bottle compartment which holds most any water bottle, and the 1" bar tacked nylon on the back works great for holding trekking poles with our optional Trekking Pole upgrade.
Sport focus: Trail and ultrarunning, Fastpacking, Adventure Racing, Hiking, Mountain Biking
*Does not come with pole attachments, these can be purchased separately.