I first tested the Exos 58 six years ago when it first appeared. I liked it then and I still do now, though the design has been through several changes over the years. It’s unusual in having an airspace between the frame and your back, something usually only found in smaller packs, with a mesh backband against your back. This makes for excellent ventilation of course and Osprey has now enhanced this with open mesh over perforated foam for the shoulder straps and hipbelt. If you hate getting sweaty this pack will keep you drier than any other tested. The rigid frame transfers the weight to the hipbelt well. The latter is quite thick but not stiffened and the foam is quite soft. It supports loads up to 15kg okay though, which is fine for a pack this size.
I’ve found the Exos 58 comfortable to carry but not quite as stable as a close-fitting pack. I prefer a body-hugging pack but for most backpacking this design shouldn’t be a problem. Only if you’re going scrambling or mountaineering might it be significant.
The Exos 58 is a pack for those who like multiple features but don’t want the weight that usually goes with them. Eight pockets and numerous attachment points make the pack very versatile. The lid can be removed if not needed. There’s a flap with buckles underneath to cover the load. Base straps can be used for a foam pad. Osprey call them sleeping bag straps but that’s not somewhere I’d want to carry my bag. The fabric seems quite tough though probably not as durable as Dyneema or Robic.
