IPX 6.5 Waterproof Rating (Can be submerged in up to 1m); Secure Latch Closure; See Through Lids; Magnetic Swing Leafs; Deep foam for secure hold of large hooks; Mix of FlyTrap Foam for offset storage and Mega Slit Foam for larger flies; Maximum capacity and organization for the various styles and shapes of flats flies; Mega Slit Foam for flies with multiple hooks; High overhead storage for large flies; Multiple entry points for maximum capacity and organization