The most comfortable backpack I have ever used. The Stratos 24 is great for hiking and bike commuting. On the bike I stow the belt buckle in the pockets on the hipbelt. A thin 15" laptop fits (very) snugly in the hydration sleeve. Mesh suspension is great for hot weather. Take it to work all week, on weekend bike to your local trail then hike/run -- does it all! Vertical zip pocket is really useful. Beautiful bag (especially in red), gets lots of compliments! Trade-offs: can't squish the bag into a tiny spot. Hipbelt can't be removed (but can be folded along the back while walking or biking). If you don't need suspension or hipbelt then buy a simpler bag. If you do, stop reading and buy it now!