Features: ZG400 Superflex: Strategically placed highly flexible neoprene panels under arms & shoulders; GBS: Glued & blindstitched seams that reduce water entry; Glideskin Collar: Comfortable, water tight collar; Full Back zip: For easy entry & with a water resistant YKK zip; A highly regarded & very popular entry level wetsuit. Warm, flexible & durable, the Billabong Intruder provides high performance at a low price.