One of the most versatile systems in wetsuit design, the classic john and jacket combo gives divers the option of layering up for cold waters are using a single layer in warmer climates. The base layer of this combo, the Thermoprene John is prized for its durability. High-quality seam construction includes a sealing layer of GBS-glue that prevents water seepage and boots warmth. The abrasion resistant Thermoprene material wears tough, fending off abuse from BC straps and weightbelts, yet dons easily thanks to 75-percent more stretch and a simple hook-and-loop closure at the shoulder. Freedom Flex kneepads guard the lower leg from bumps and scrapes without inhibiting natural movements.