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 Kenneth Cotton

This purchase has several quality/design issues. I bought it to use in my long marathon runs, so I use it once a week. Water constantly leaks from the mouthpiece. So, a few miles before my shorts got wet. As other reviews have suggested the design is flawed as the tube just bounces around. I put it in the strap but even then it still moves. Also, the material is not durable at all. After two passes, one of the front pockets already has a hole. The only things I put in my bags are different gels/fuels, so the fabric has to be so delicate that it can't be ingested, that's absurd. This was my first Nathan purchase and probably my last.