Review on 🏃 Nathan Men’s VaporKrar 4L 2.0 Hydration Pack/Running Vest - 4L Capacity with Twin 20 oz Soft flasks, Hydration Backpack Ideal for Running, Marathon, Hiking, Cycling by Jeff Dabney

I tried 3 different packs of Nathan and 3 packs of Salomon to see which one suits me best. I keep coming back to it. Best in my opinion for storage, pocket accessibility, bottle design and fit. If you prefer a tank over front mount bottles I would recommend the Nathan Vapor Air 2.0 4L. It was second place, but I prefer pistons to bubbles. The Salomon packs actually fit a bit better, but they had an inferior bottle design and the cargo bounced around in the pockets, which was an annoyance I couldn't manage on longer trips. I highly recommend this package. Costs money.