Quality fly tying foam with high density, closed cells have been a staple product in the Semperfli fly tying materials range for many years. We use top quality plastazote foam with nitrogen bubbles which float high and are easy to tie with. As well as single color foam sheets and foam blocks we are now introducing our Double Decker Foams including Double Decker Foam Small (5mm) Black & Dun, perfect for Chernobyl Ants, Hoppers, Daddies, Gurglers, Fry, detached bodies and other high floating fly patterns. Don’t confuse this with closed cell craft foam, it is high floating, closed cell foam.