A thin fly case type fly patch suitable for storing thin flies such as nymphs and midges. One side is a flat magnet that easily accommodates lightweight immersion patterns such as WD-40 and RS-2. Micro slit foam is available for storing heavy bead heads and patterns. With a thickness of 18 mm, the ultra-thin chest fly patch does not add bulk to the chest area of a fishing shirt. A fly box that can be attached to a fishing shirt or vest. Built-in magnet makes it easy to store used flies. Size: H108xW74xD18 Weight: 41g Weight