The 3400 NorthRim reaches its 55-liter total through a 45-liter main body plus a 9.8-liter roll-top extension, weighing 989 grams — built entirely from DCH150 Dyneema Composite Hybrid rather than the lighter DCH50 used on the body of some 2400-series packs, which likely explains why it sits near the top of the 3400 lineup's weight range. The frame uses contoured aluminum stays, and Hyperlite Mountain Gear rates the padded Hardline hip belt for loads up to roughly 18 kg.
One front pocket and two side pockets provide external access without cluttering the exterior, and a single ice axe loop covers occasional scrambling rather than dedicated mountaineering. Load lifters are absent, so the design leans on the stays and hip belt rather than additional strap adjustment for load transfer.
Aimed at off-trail multi-day trekking and thru-hiking, the NorthRim suits hikers carrying heavier resupplies or off-trail gear who still want a Dyneema pack's low weight-to-volume ratio, at about 18 grams per liter.