Waterproof 6-compartment box with slot foam. 4.5”L x 3”W x 1.5”D – Item #:  NECK/BOX ​ Medium double-sided waterproof fly box with slit foam. 6.3”L x 4”W x 1.8”D  ​ Large waterproof fly box with slit foam plus extra insert to double capacity. 8.75”L x 4.75”W x 2”D