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Here's a summary of the key differences: Suspension The new version of this pack features an adjustable suspension system, which Kelty has branded the PerfectFIT

Likewise, a 4L kangaroo pocket that folds out from the bottom of the bag, a 10L packing cube designed to fit within the front pocket, and a detachable divider called Spider Net System increase the backpacks capacity from 16L to 30L, providing versatile external storage for your gear

You can see some of these differences in this video about Gregory Katmai and Kalmia packs for men and women: Non-essential differences Volume differences Very frequently, but not always, you can see that packs for men and women are with a different volume

This jacket is also windproof, so you could also wear it as a windbreaker

It has two clips, and turn the center lever to lock it into place