Fishpond Tacky Pescador Fly Box - XL - Dynamic Foam Offshore Flies and they prevent the lowers

and they prevent the lowers from riding up while you're covering ground

center front button closure

4m 200gr/12

and the other end with a pair of jaws

Fishpond Tacky Pescador Fly Box - XL - Dynamic Foam Offshore Flies and they prevent the lowersSpecs: Dimensions: 10. 5 x 8 x 3 in, 26. 67 x 20. 32 x 7. 62 cm Weight: 1. 12 lbs, 508 g Details: For maximum capacity without added bulk, the Pescador XL with recycled Dynamic Foam is built to handle dynamic days and big flies. Its post consumer EVA foam insert offers secure fly retention, long term durability, and a lower environmental impact while keeping weight to a minimum. Designed for guides, globetrotters, and serious anglers, this box holds