The Harmony Synergy Sprayskirt is constructed of urethane coated 210 denier nylon for added durability at a value. It features an adjustable neoprene waist with Velcro flaps to maximize comfort and function. The tunnel features a two way urethane coated YKK zipper for increased ventilation or quick and easy access to the inside of your boat. The adjustable shock cord rand with PU coated rim area ensures a waterproof seal and reliable grip on the cockpit of your boat.