Check the listing for details. Mcfly Foam-Fly Fishing Tying Material. Condition: New. Listed at 3.40 USD. McFlyFoam McFly Foam is a strong, stretchy, continuous filament yarn which is dyed using colorfast dyes that prevent it from fading. Use it to tie eggs, glo bugs, and sculpted patterns like sculpins, crab patterns, and woolhead flies. McFly Foam is widely regarded as the best yarn for creating perfectly round eggs and is very easy to work with and blend. If you're looking for the best fly tying material to tie beautiful egg patterns with efficiency and ease, look no further. This stuff flat out catches fish and is available 49 beautiful colors! Package dimensions: 2-1/2" x 4" x 1" Colors treated with fluorescent dye: Bright Red, Chartreuse, Cream, Early Girl, Flame, Fluorescent Cerise, Fluorescent Green Chartreuse, Fluorescent Peach, Golden, Iliamna Pink, January, Kelly's Green, Late McRoe, Late Pink, Orange, Oregon McCheese, Ripple, Steelhead Orange, Strawberry, Tangerine, Watermelon, White McFlyfoam is the very best Egg Yarn on the market! It is ideal for tying Egg patterns but also for Carp flies and use as a strike indicator. The dyes are waterproof an the colors vivid. The original McFly Foam is a premium material for tying egg patterns and wool head sculpins. McFly Foam absorbs water and sinks faster than yarns and other natural materials. It also ties a fuller, more even egg pattern. McFly Foam is made in the U.S.A.