These Ultra Thin fly boxes are huge sellers for us and this is the largest of the "vest" sized.
The large measures 7 3/8" X 3 7/8" X 1/2". It has 168 slits that hold micro to medium sized flies. A large...yet super thin fly box that still fits nicely in most longer vest pockets.
Mad River Outfitters Ultra Thin fly box Large- item# 1420
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