Men's Short Sleeve Chlorine resistant Wetsuit top. Instructor series . Made from our 0.5 mm Neoprene, coated on both sides with Chloroban ( PBT/Polyester ) and sewn with a Poly poly thread. Blue with Black side panels. Full zip in the front. Recommended for Swim Instructors who spend long periods of time in Chlorinated pools. Please read our Expected Usage and Warranty information.