Large Streamer Fly Box with Click Lock - Waterproof Fishing Tackle Storage for Boat & Fly Fishing - Durable Foam Trays for Organizing Streamer Flies (L) - Perfect for Fly Fishing Trips & Boat Storage

This is a nice sturdy, lightweight fly fishing boat box or can be used for larger flies like streamers, hoppers etc for storage. Two pieces of stick on slotted foam for the inside and 1 piece of stick on slotted foam for the lid to keep spares easily at hand. One word of caution is that the box is not fully waterproof, so if it gets splashed hard, it's best to open it up at the end of the day to let your flies air dry and not rust. Not sure if it would float if it falls in the water, that might depend on the weight of the flies inside obviously. For the price, it's a winner.