Designed and manufactured in California, these covers are designed to provide stylish but serious protection for M and MX-Series ETXv2 Coaxial Speaker Systems. Having undergone over 1000 hours of salt/fog and UV testing, these durable protective cases feature 3mm Neoprene, laminated with Gray spandex and imprinted with a white JL Audio logo on each side. This marine-ready material is UV-resistant and features tiny laser-cut holes at the bottom that are just big enough to let water filter out, and purposely small enough to never let insects in. A single, high-quality #5 zipper with locking slider on the front facilitates quick and easy covering or removal. This case is the perfect solution to problematic dust, grime and other environmental agents that can be harmful to your speaker while your boat is docked or trailered.