Made from tough, clarified polypropylene. These 1/2" thick minimalist boxes will keep you loaded with midges and options while keeping the bulk down. Available with a variety of foam or magnetic backers. There is a super slim box for the needs of every angler.Tall Boxes: 7 x 4 x 1/2"1420 Tear drop foam1421 12 compartment with magnetic backer1422 18 compartment with magnetic backer1423 6 compartment with magnetic backerShort boxes: 5 x 3.5 x 1/2"1425 8 compartment with magnetic backer1426 tear drop foam Guide Size Boxes: 9 x 12 x 7/81427 Teardrop foam (450 slots) 1428 Slit foam (247 slots)