Arc Haul Ultra 40L Backpack (DISC) Color:Jet Black *The length has been increased

*The length has been increased and is in effect across all sizes as of November 2025 thanks to feedback

Probably best on trail

Arc Zip Ultra

and thumb holes that provide sun protection for your hands and prevent your sleeves from riding up

The triangular shape preserves your headroom when sitting up on either side of the nest

Arc Haul Ultra 40L Backpack (DISC) Color:Jet Black *The length has been increasedIm on the Appalachain Trail right now for the last 30 days and am 100% happy so far. Awesome pack. Probably best on trail. John M., Long days between resupplies requires a pack designed with ample space and durability. Made from Ultra 100X material, the ultralight Arc Haul Ultra backpack is innovatively designed to be a true workhorse from the Sierras to the Shenandoah. Comfortably transfer your packs weight to your hips with our custom Curved Carbon