This pack was designed for British Special Forces, is super tough 1000 denier nylon, 45 L main pack is expandable by adding the PLCE side pouches which add another 25 L capacity. Side pouches can also be attached to an optional yoke turning them into a day pay for exploring.
- Coolmesh back
- Tough 100 Denier Nylon with silicone/PU coating for water resistance
- Removable F-format internal frame
- Hydration bladder compatoible
- Heavy at 1.5 Kg for the pack and 500 g for the two side pouches
Excellent pack, will easily carry 50 Lbs. I took it on a ten-day backcountry hiking trip and it was very comfortable, carried all my food and everything else with no problem, sheds water effectively in the rail.
There are lighter packs out there, but this one is very robust and can take all sorts of punishment. Completely adjustable shoulder straps, waist belt, and load lifters, make positioning the load super easy.
Source: bought it new