Karsyn Ansariwrote a review of Ultimate Direction Race Vesta 4.0 - Women's on August 30, 2019
Familiarity: I've used it several times
It fits everything I need for a long run in the mountains: layer, water, phone, lip balm, snacks. The water capacity is nice, with the two bottle holders in the front and space for a 1.5-liter bottle in the back. My only complaint is how unbalanced/uncomfortable the best vest feels with two full water bottles in the front. I tried it with just the bladder and it felt so much better. I think I'll just have to use the bladder from now on instead of the bottles. It could just be that the vest doesn't fit my body well, although it feels really secure otherwise.