The ideal solution for beginers, schools and rentals. The YKK X-type 2 way zipper allows easy dressing and fast undressing. This long john also features A-symmetric cut on ankles for easier donning, less tearing and therefore more durability. It is made with 3 mm double lined neoprene. The back of the long john is made with abrasion and tear reinforcement duratex neoprene.