Lightweight polycarbonate fly box, hard-wearing and more resistant to drops. Guide ridges on the outer edges to help you keep a firm grip on things. Slips easily into a vest or shirt pocket. Features a sleek, premium looking frosted lid so you can see your fly inventory. Inside is a one-sided high density, 4mm slit foam with capacity for up to 143 flies. Ideal for flies sizes 10-18. Lid closes using powerful neodymium magnets situated in the front corners. Dimensions: 4.7″ X 3.25″ X .7″. Made in England.