Product Review: CAMELBAK, Ultra Pro Vest As soon as I put this race vest on, I new it was a great fit. It didn't feel tight anywhere on my body and more importantly, it didn't feel loose at all. There are 2 straps at the front that you can tighten/loosen. These can be unclipped and repositioned higher/lower to fine-tune the fit. I didn't have the reservoir that goes with this vest but it has to soft flasks that sit up front on your chest. By not using the space where the main reservoir goes, you could use it for storing extra snacks or clothing. Up front it also has a dry zip pocket for your phone. Sadly the iPhone 7 plus doesn't fit in it. However, I only used one of my soft flasks on this run and my iPhone sat comfortably in the other flask pocket. It has a built in whistle and lots of pockets to stash your Endurolytes, Heed, Fizz, Gels etc. It also has a big open pocket behind the CAMELBAK logo, underneath the reservoir. You could easily stash a jacket or extra reservoir on a long run/race if you needed to. The soft flasks are really nice. They have a lock on them so no fluids leak. I set them to 'Open' and nothing leaked out. The vest material is very light and playable. It has a woven mesh that helps it breath and stops it from retaining moisture on hot or rainy, runs. Another great feature is the added reflective accents. Great for early morning/late night runs. So, would I recommend this vest? YES. Not only that, I fully intend to keep using it. I personally would use it for casual training runs and all the way up to a (supported) 100 miler. #prototeam #gotyourback #run #running #ultras #ultrarunning #gearreview #hydrationpack #runningpacks #runsmart #runflorida #runfloridarun #hydrate (at Tavares, Florida)