Aqualung Men’s Long Sleeve Rashguard Review ClubNugget Rash Guards March 17, 2018July 13, 2018Aqualung, Diving & Snorkeling, Outdoor Recreation, Sports & Outdoors, Water Sports 0 Comment Aqua Lung Rashguards are designed to be worn in and out of the water for protection against the sun s UV rays, as a layer to guard against possible critters that will sting or scratch you or as an additional layer under your Aqua Lung wetsuit.