Rock Hopper Slotted foam fly boxes with Stainless Hinges.These snap tight boxes have great clearance for streamers or big dry flies. With the new SURE_LOCK foam it is easier than ever to store your flies. Simply let the hook find the channel and then add pressure to lock it tightly in the slit foam. Small 1 x 3. 75 x 6. 5" Large 1 x 5 x 7. 25" I've been looking for high value streamer box and this is the one I decided on. Foam is light weight and holds the flies very well. This is my preferred new streamer