Our most popular fly boxes feature EasyGrip(TM) foam. The box is made from high-grade polypropylene with no sharp edges, corners or protrusions. Engineered with a double living hinge and positive latch. EasyGrip(TM) Foam has slits that act as fly keepers and small cutouts to guide your flies into each slit. (See Enlarged View) Holds large numbers of flies with no damage to the foam. The swingleaf version has four surfaces of EasyGrip(TM) foam and holds hundreds of flies. Colors are Light Sand or Earth Brown. Three sizes to choose from. Made in China. Medium 6 1/8x 4 1/8x 1 1/2" Large 7 3/4x 4 1/2x 1 3/4" Large 7 3/4x 4 1/2x 1 3/4" with full length continuous slit foam