Review on 🏃 Nathan Hydration Vest Pack - 4L Men/Women's Runner's Vest with 1.5L Swift/Swiftra Bladder for Optimal Hydration. Adaptive Fit Backpack - One Size Fits Most. Convenient Storage Pockets, No Bounce, Chafe-Free Design. by Brett Tierney

Look at the picture. The bladder tube hangs and dangles as you run, but I just tucked it under the strap. Plenty of storage space and sufficient bladder capacity. Use to prepare for a marathon. Runs small, so if in doubt, take one size larger. I'm 5ft 6in, 130lbs, 36in bust and I went size xxs-m and was comfortable layering over a long sleeve and a light jacket. Good value for money but still prefer the VaporAiress but they were sold out everywhere in my size. Update - The tags indicate that the bladder has a quick release connector to disconnect the hose from the bladder. Beware! It is not true! The bladder I received does not have the hose detach at all for cleaning!