Women's Instructor series Chlorine resistant wetsuit top.INSTRUCTOR or TEACHER logo optional. clour Black. Long Sleeve. Full Zip in the front. Made from our 0.5 mm Neoprene. Coated on both sides with PBT/Polyester (Chloroban) and sewn with a Poly / Poly thread. Recommended for Swimming Instructors who spend long periods of time in chlorinated pools. Please read our EXPECTED USAGE and WARRANTY document.