UV Chewee skin is one of our favorite fly tying materials. Chewee skin provides a life-like appearance and soft feel to your flies. Some of our favorite uses for UV Chewee skin are caddis larva patterns, stonefly nymphs, and scud flies. Chewee skin must be sealed once it has been wrapped around the hook. Many fly tying cements melt UV Chewee skin. The best sealant we have found for UV Chewee skin is Loon's Soft Head Clear.