Review on AONIJIE Running Hydration Vest Backpack for Women and Men - Lightweight Trail Running Backpack 5.5L Gray: Stay Hydrated and Comfortable on Your Runs! by Mufti Carter

I purchased this hydration vest during Revain Prime Days 2020 for about $30. This is the best running gear I've bought this year. The material is soft, stretchy and lightweight. In the main compartment I can use a 2 liter tank and in the front I have space for 2 x 10 oz bottles. I only carry 1 10oz bottle and use the other pocket for my phone, gels or gua. There is a small pocket that fits perfectly for 1 PG pocket or your keys. The pouch fits best when the bladder is full, tighter, and generally has less movement. I've also used the backpack to stash things I didn't need in the beginning like extra PGs, gel packs, a headlamp in case the sun came up, and my phone when I haven't messed with it for a while. The material is soft and does not cause friction problems. I wear it for 12-22 miles and plan to use it for my marathon. This vest fits perfectly and is adjustable. Easily suitable for medium/larger than average breasts.