Umpqua Pro Guide Fly Boxes

The UPG (Umpqua Professional Guide) Fly Box Series is available in three different sizes and each size has a different color for easy identification. The large box holds up to 732 flies, the medium box holds up to 508 flies, and the small box holds up to 274 flies. We dunked a couple of UPG boxes and no water entered either box. These boxes are built hell for stout and are considered waterproof. They will keep your new flies in new condition, even if you take a swim.
Remember that waterproof boxes don't breath. Don't put soggy flies back into waterproof boxes until they have been completely dried or you will have rust on your hooks and deterioration of organic fly parts.
UPG Lids are transparent, so that identification of what is in each box is easy.
UPG boxes feature the Fly Trap™ Foam System, which incorporates precut slits into the foam.  This system first introduced by C&F Designs has become very popular with many anglers. This is because the slits hold flies securely and keeps the foam from wearing out with use.
Each box has two lids with the flies on a leaf display. This system is very secure. The push button to open the fly box can easily be executed one-handed.