Running Vests

Do any of you use a running vest at all?

I use a Salomon vest.

https://www.rei.com/product/244098/salomon-adv-skin-12-hydration-vest?sku=2440980004&store=&CAWELAID=120217890019456346&CAGPSPN=pla&CAAGID=186590043284&CATCI=pla-2443761971652&cm_mmc=PLA_Google%7C21700000001700551_2440980004%7C2443761971652%7Cbrand_flag%7C22989917167&gclsrc=aw.ds&gad_source=1&gad_campaignid=22989917167&gbraid=0AAAAAD_DTlzmGbRO5ZUl-U1a8acGy8lCJ&gclid=CjwKCAjwnvTUBhBoEiwAZNDxZ-V8KqPEscMF0oI9G9wjgM2yjiQ_o8xI0UWOl3fOYh7Stx0tSeERIxoCFCMQAvD_BwE

I like it a lot. It holds everything I need, including my 2.5-liter hydration bladder.