After seeing '199' use this vest for his run at Baja I was interested in giving it a try. I've enjoyed the capabilities of my Thor Hydrant pack for the last 5 yrs. Its held up well and has always carried what I need when venturing out solo, but at the end of the day I can really feel the strain on my shoulders. Other reviews of this vest tout its comfort level over standard hydro/tool packs as it distributes the load both lower and more evenly across the torso. Old pack to new pack Here's a shot of what I pack with me. It's a minimalist approach but it seems to get me by. I carry my zipties on my fork tube (Oscar taught me that one ), and I carry another tube in my fender pack. KTM kit has a variety of nuts/bolts/safety wire/master as well. I could easily pack 2x more gear than what I have. Each pocket was 30-50% full with some still empty. Distributing the goods up front is nice and makes for quick accessibility The rest of the bulky/heavy items fit nicely across (and low) the back. Well I gave it a first run on Friday and completed about 30mi of HH 1-track. Right out of the gates vest just felt right. The side straps allow this vest to be properly tightened to your body and you really don't even notice your wearing it. It smiled at any high speed rough terrain I threw at it and never budged a bit. I could tell that the vest was keeping my body heat in more and though it was noticeable I was still very comfortable (we'll report back after a 90F ride though ). The 2L H20 bladder was enough for the day but I'll be using my 3L badder for day rides. Another thing I was worried about was when Derek (dirtman), who also has an earlier version of this vest, showed me that the collar was chafing his neck and needed to 'pad' it. I didn't experience this at all! I wear this vest over my CP so that could have helped no sure, all I can say is I was VERY comfortable all day. Of course when your upper shoulder muscles are no longer carrying the load then that just means some other set of muscles has to carry the load even if its distributed. In this case it was all my 'core' muscles and lower/mid back muscles. The next day revealed which muscles but it was a 'good' sore unlike the soreness I would feel after two days of carrying a backpack around. Lets see what else, build is tip top, design is well thought out.....its just better IMO than a backpack style hydropack. There's also enough locations to use M.O.L.E. clips and attach more cargo pouches if necessary. All in all Im pretty stoked!