Medium/large box is 5 3/4" x 3 3/4" x 1 1/4" high
Rippled foam on both the top and bottom of the fly box
Mill Stream is a manufacturer of specialty fly fishing accessories and materials. Their innovative products appear in fly fishing retail shops across the United States and around the world. Best of all they are made in the USA!
Ripple foam is ideal for protecting hackled flies while flat foam is best for nymphs and wet flies.