GORUCK GR1 Rucksack

The body is Rugged Twill — a 14.5 oz oil-finish cotton canvas that Filson has used since 1897 for the Alaskan gold rush market. The oil finish makes the canvas water-resistant without a membrane; rain beads off the surface. The webbing straps and carry handles are woven nylon sewn with a harness-stitch pattern that can hold thousands of pounds without fraying. Solid brass hardware on the adjustable shoulder strap. The bag is made in Seattle, Washington. Filson's guarantee is unconditional — they will repair or replace any Filson bag regardless of age or condition.

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.