The women's Granite Gear Perimeter 50 uses the same back system as the men's model – tensioned mesh over a Perimeter Suspension combining spring steel and a PE board – with the hip belt, straps, and adjustable torso length tuned for a women's fit. At 50 l and 1,407 g, it works out to about 28.1 g per liter, essentially matching the men's version.
Built from 100D/210D Robic nylon for multi-day trekking with heavier loads, it's rated by the manufacturer for up to 40 lb. The Re-Fit hip belt with two zippered pockets keeps a map, phone, or snack within reach without taking the pack off. Front and side pockets add storage for frequently used gear.
The main compartment opens through both the top lid and a roll-top, letting the volume adapt to the length of the trip. It's hydration-reservoir compatible but has no integrated rain cover.