Filson 72-Hour Duffle

1000-denier Cordura nylon — the heaviest-weight commercial nylon fabric available, originally spec'd for military field equipment. The HDPE frame sheet is the same material used in bulletproof vests and cutting boards. Internal frame channels distribute load directly to the hip belt with the efficiency of a hiking pack in a daypack form factor. The compression-molded carry handle and bar tacks at every stress point are military construction. GORUCK guarantees the GR1 for life — the company was founded by a former Special Forces soldier who wanted the same gear quality he used in the Army to be available for civilians.

Mystery Ranch uses 500D CORDURA nylon with the brand's proprietary FUTURA yoke — an adjustable spine-length system that positions the shoulder harness attachment at the correct point for any torso length using a single-tension pull. The sternum strap uses a quick-release buckle rated to 500 lbs. All main compartment zippers are double-pull YKK #10 — the largest, most durable YKK zipper available. Built in Bozeman, Montana for the US military (the company was founded by former DANA Design and Kelty engineers). The 3-Day Assault is issued to special operations units as their standard off-mission bag.

The Anti-Gravity suspension system uses a continuous mesh back panel tensioned between two curved aluminum frame stays — the mesh contacts your back in a floating hammock configuration that allows airflow and distributes load to the hips without hot spots. The LightWire frame stays are aluminum alloy bent to match the curve of the average spine. 210D nylon packcloth body with 420D reinforcement at the base and high-contact zones. Osprey's All Mighty Guarantee repairs or replaces any Osprey pack for any reason, forever — manufacturing defect or accident. The 65L capacity is the sweet spot for 7-10 day trips.