Amarine Made Fly Fishing Backpack Adjustable Size Multi-purpose Vest Mesh Fishing Vest Pack,Detachable Fly Fishing Vest and Backpack Combo with Chest Strap and Chest Bag Messenger Bag-D77 (Gray) Price: $38.99 (as of 08/04/2021 01:50 PST- Details) & FREE Shipping.

This fishing vest is detachable.The front side two pieces could be detached as a pure vest;If you detached from the reverse side it is a backpack, a real backpack with chest strap.The front side if you only detached 1 piece it is a chest bag,messenger bag.
This is a multi-purpose vest. Both its front and reverse side has fine workmanship,which our designers spent a lot of care on it.So it is more expensive than others.
This is a very well constructed fishing vest,very well thought out design that has pockets within pockets to pack stuff in and many toggles and loops.There are adjustable straps all over the place to make it wider and longer. The fabric on the back is lightweight so the breeze can flow through and keep you cool.