Backpack UL 50

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The BP UL 50 is two packs in one. Created with speed in mind, it has an efficient suspension for lighter loads and its ComPacktor system quickly converts it from a multi-day hauler to a trim 20L day pack.

The BP UL 50 is packed with light features you'll love, from the dual ice axe loops to 3 large stretch mesh pockets. And it's tough: the white Ultra-high-molecular-weight polyethylene threads are 3x stronger than Kevlar and 15x stronger than steel.


Specs at a Glance

Max Volume: 50 liters
ComPackted Volume: 20 liters
Max Suggested Load: 30lbs
Weight (M): 1lb 6oz

The UL 50 is lighter than almost every long-haul pack in its class and can easily carry loads up to 30 pounds for many thousands of miles.
Comfort starts with lightness. Our shoulder straps reduce weight, allow moisture to pass through, add flexibility, and ventilate on warm days.
Not many pack makers use Ultra-high-molecular-weight polyethylene Gridstop because it's so hard to cut and sew. Our UL 50 benefits from over 20 years of design refinements, and feedback from customers who have trail-tested them over millions of miles as well as hundreds of summits to the highest peaks on earth.

Details Matter 

Spine Lengths*:

Small = 15.5-17.5"

Medium = 17.5-19.5"

Large = 19.5-21.5"

Hip (Iliac Crest):

Small = 25-48"

Medium = 29-52"

Large = 33-56"

*Spine Length is measured from the 7th (bumpy) vertebrae to the top of the iliac crest (hip bone).

• UHMWPE Gridstop threads are 3x as strong as Kevlar, 15x as strong as steel

• Composite frame sheet

• Contoured hip belt wing

• Contoured foam shoulder straps with reflective tube guides

• Air mesh lining on shoulder straps

• Adjustable stretch sternum strap with reflective tab and emergency whistle

• Internal reservoir gravity hook and twin hydration ports

• Haul loop

• Extension collar with draw string roll top closure and quick pull tab

• Large stretch mesh front pocket with secure key clip

• Twin ice axe retention loops

• Stretch mesh side pockets

• Extra-long compression straps accommodate external loads on sides

• Side compression straps can connect across front

• Loops and tabs at bottom seams complete ComPacktor system so your smallest loads can be kept close to your back

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