Maxcatch Waterproof Fly Box Double Clear Lid Slit Foam, 4.9 x 3.9 x 1.7 in Review (2026)

What this size adds over the smaller box

This box measures 4.9 by 3.9 by 1.7 inches, sitting above Maxcatch's smallest 4.1 by 3 by 1.3 inch option in the same waterproof fly box lineup, which translates directly into more slit foam area for flies on both interior faces. That makes it a better fit for anglers who want a single box to cover more of a day's fly selection, rather than splitting patterns across two smaller boxes or carrying a dedicated backup box. Anglers who tie or buy a wide range of nymph and dry patterns, or who like having spares of each pattern rather than just one or two, will get more practical use out of the added capacity here than out of the smaller version.

Materials and waterproofing

Like the rest of the Maxcatch double clear lid line, this box uses clarified ABS plastic for both lids so flies are visible without opening the box, paired with rubber gaskets on both sides that seal out water and let the box float if dropped in the river. High density slit foam lines both interior faces to hold fly hooks securely, and the added depth of this size means the foam area on each face is proportionally larger than on the smaller 4.1 by 3 by 1.3 inch box, giving more surface to slot flies into without crowding them. The latch mechanism is the same secure but easy to open design used across the size range.

Everyday carry and tradeoffs

At 1.7 inches thick, this box is noticeably bulkier in a pocket than Maxcatch's 1.3 inch small size, and it will sit less flush in a tight chest pack pocket or thin vest slot. That added thickness is the direct tradeoff for the larger capacity, and anglers who prioritize a slim profile over holding more flies in one box may prefer the smaller version instead. For anglers who carry this box in a larger pack pocket or a dedicated fly box slot rather than a snug shirt pocket, the extra thickness is less of a practical concern and the added room for flies becomes the clear advantage.

How it compares in the site's fly box guide

In the site's roundup of waterproof fly boxes, this larger Maxcatch box ranks sixth of eight, scored the same as the Kingfisher XL and the smaller Maxcatch box, and just behind the Aventik small two pack, with the C&F Design CF3500 and Dr. Slick large box ranked highest overall. Within this closely scored cluster, the choice between this box and the Kingfisher XL mostly comes down to preferred shape, since the Kingfisher spreads capacity across a wider, slimmer footprint while this Maxcatch box adds capacity through extra depth instead.

Bottom line

Choose this larger Maxcatch box if you want more fly storage than the brand's smallest size offers while keeping the same reliable double clear lid and slit foam design, and you do not mind a thicker box in your pocket or pack. It suits anglers who prefer one larger box over carrying several small ones. Anglers who value a slim profile above extra depth should look at the smaller 4.1 by 3 by 1.3 inch Maxcatch box or the Kingfisher XL, which spreads similar capacity across a flatter shape instead of added thickness.

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