Umpqua UPG LT Standard Foam Fly Box - Red The Umpqua UPG LT Standard Foam Fly Boxes were designed with the fly fisherman in mind. These low-profile fly boxes sport a single sided slim design and are versatile enough to organize any custom combination of dries, nymphs, terrestrials or even streamers. These pocket-sized fly boxes will fit great in any sling, pack, or vest, leaving you extra room for all of your other fishing needs. The UPG LT Fly Boxes are constructed out of TPE (thermoplastic elastomer) injection-molded fly sheets which are lighter than the silicone alternatives and provide the maximum amount of grip. Umpqua opted for see through covers on the UPG LT fly boxes so that, with a quick glance, you can see all of your fishing options and be prepared when the fish start biting. The Umpqua UPG LT Fly Boxes are a must for every fly-fishing enthusiast.