I bout this about a month ago and have used it on a couple rides. The negatives I’ve found so far are that the bladder makes the water taste like it’s from a hose and the mouthpiece sucks. Also, there are clips for a waist belt but no waist belt was included so it doesn’t really stay tight to my body like I would prefer when trail riding. Other than that it has plenty of storage and is fairly comfortable.
One of the best packs I've seen for carrying tools, cameras, spare socks and gloves. Loads of compartments and straps to hold wrenches and tools. Not quite Camelbak quality, but still seems to be built pretty well. Only reasons I didn't give 5 star are for the small filler hole and I don't much care for the mouth piece (compared to Camelbak). Still a great pack for the price.
There have been no questions asked about the Fly Racing Stingray Hydro Pack.