Crux AK37

The AK37 is a compact climbing sac for mountaineering and alpine rock routes. A traditional top-loader, it has quickly gained recognition as an excellent all-round sac, particularly on big one-day technical routes. Uniquely for a sac this size, it has (removable) frame-stays making it comfortable to carry even when laden with 10 kg of ropes and hardware

Side compression straps - quick and easy to fit or remove

Oversized back haul loop - easy to grab and clip

External lid pocket - with taped seams for water-resistance

40 mm webbing waistbelt with low-profile hip-fins

4 mm Rivory-Joanny drawcords - handy for emergency rap anchors

Internal sleeve for hydration bladder

Two ice-axe holders

Stretch wand pockets