Zone 3 Mens KneeSkin Neoprene Swimming Wetsuit.  Based off of Zone3\'s swim skin, the neoprene Kneeskin features 1.5mm-2mm to provide more warmth than jammers or swimsuits whilst maintaining a streamline silhouette as not to hinder your swimming performance.  Featuring a backzip for ease of entry.  Ideal for non-heated swimming pools, openwater swimming in the summer or for those who want more freedom of movement when training or competing.  Alternatively, the Kneeskin suit can be worn underneath your current wetsuit to provide additional warmth during the colder months or to provide extra bouyancy on longer distance swims.