Hareline 3mm Thin Fly Foam all colors Size 3 MM $7.55 Color Black Brand Hareline Dubbin Inc Part Type Foam Type Foam Body Fish Species All Freshwater, All Saltwater Item Length 4 Item Height 0.5 Item Width 4 Model Hareline 3mm Fly Foam condition New Our eBay Store Add to Favorite Sellers Hareline 3mm Fly Foam - Harelin's 3mm fly tying foam comes in two 3" x 4" sheets and is available in a variety of colors for all of your fly pattern needs. These fly tying foam sheets are durable, pliable and float well.