CRUX

Sizing: Crux rucsacs come in fixed back-lengths for greatest comfort and reliability. The lengths are measured from the base of the sack to the yoke (between the shoulder straps). To compare these measurements with typical backlengths (as measure from the top of the Iliac Crest (bip-bone) to the 7th Vertebrae (the one that sticks out level with the shoulder blades) add 10cm). The guidelines below are based on people of normal leg/back length ratio and chest size. However, there is no substitute for trying on a loaded rucsac to establish the right size.The only true way to size a rucksack is to try it on, in the shop, with a fair bit of weight in. Slacken off the shoulder straps and top and side tension straps, then do up the hip-belt up, bend forward, and do the hipbelt up even tighter. Now stand up - the sack should be resting on your hips. Now tighten the shoulder straps until they are close but not over-tight. They should curve gently over the shoulders from a take off point between 5 and 15cm down the shoulders. If they do not, it is a fair sign that the sack is the wrong back-length. Do up the chest strap in the same way. Finally tighten the top and side tension straps to draw the load in and acheive maximum comfort. The correct size is related to your back length which is related to, but not totally dependent upon your height. As a rough guide only:

Crux - Approximate Sizing
Size	Backlength	Height Men		Height Women
	cm	inches	m	inches	m
1	40	under 5'7"	under 1.70	up to 5'9"	up to 1.75
2	45	5'7" - 6'0"	1.70 - 1.82	over 5'9"	over 1.75
3	50	over 6'0"	over 1.82

Ultraltough and uncompromising but light, 30 litre frameless alpine climbing sack. Roll top lid with compression strap/rope tie. twin axe loops, side compression lacing, wand packets, shaped shoulder strapsand chest strap, but minimilast waist belt, twin haul loops, internal bladder pocket with exit hole for drinks tube. Shoulder starps fold away for hauling. Cordura/kevlar body with polyester tricot on contact areas. One size only. Weight 700g.

This sack is currently sold out. A new vesrion is due in Autumn 2008. 

Very light 37 litre crag and walking sack in Cordura/Kevlar with twin staves for support and stability. Lid pocket, removable side compression straps, wand pockets, haul loop, internal pouch for hydration device, twin ice-axe loops, cheststrap, and basic waist belt. One size only. Weight 950g

Stop Press: Awarded 5 stars in Trail Mag's Best in Test, May 2008!! 

Quantity:  

Stock

0

Extremely tough but lightweight 45ish litre sack for alpine use. Average weight is 1150g!. Cordura/Kevlar body with Cordura base. Lots of sensible features including a very light internal frame, wand pockets and gear loops.

NB This model does not have an extendable lid.

Three back lengths.  

Quantity:  

Backsize 123 Colour Gunmetal Backsize Colour Stock 1 Gunmetal 1 2 Gunmetal 1 3 Gunmetal 2

Extremely tough but lightweight 45ish litre sack for alpine use. Average weight is 1150g!. Cordura/Kevlar body with Cordura base. Lots of sensible features including a very light internal frame, wand pockets and gear loops.

This model has a 10 litre extendable lid.

Three back lengths.  

Quantity:  

Backsize 123 Colour Red Backsize Colour Stock 1 Red 0 2 Red 0 3 Red 1

Extremely tough but lightweight 55ish litre sack (extending to 60 litres) for alpine, trekking and himalayan use. Will carry up to about 25Kg in comfort. Cordura/Kevlar body. Lots of sensible features including a very light internal frame, 10 litre extendable lid, wand pockets and gear loops. Three back lengths. 1250g. 

Quantity:  

Backsize 123 Colour Gunmetal Backsize Colour Stock 1 Gunmetal 0 2 Gunmetal 3 3 Gunmetal 0

The AK70 is a large expedition sac suitable for climbs in the Greater Ranges. It can carry a heavy payload of 25-30 kgs in reasonable comfort, but still remain light enough to be used for a summit push.

Removable floating lid, side compression straps - quick and easy to fit or remove, oversized back haul loop - easy to grab and clip, top compression strap, external and internal lid pockets - with taped seams for water-resistance, 40mm webbing waistbelt with low-profile full-sized hip-fins, 4mm Rivory-Joanny drawcords - can be used for emergency rap anchors, internal sleeve for hydration bladder with an oversized port for insulated tubes, two ice-axe holders, stretch wand pockets, reinforced double-layer base panel. Fabric: Kevlar/Cordura. Frame: 8.00mm 7001-T6 alloy M-frame/12mm Titanium centre stay

Capacity: 70 + 7 litres. Weight: 1500g approx. 

Quantity:  

Backsize 123 Colour Red Backsize Colour Stock 1 Red 1 2 Red 1 3 Red 1