Stylish, warm and versatile, the Fast can be used in the widest range of temperate and cold waters. Durable 3 mm, double-lined Neoprene�, stands up well to compression at depth for maximum heat retention. The sleeves are very resistant with a "Seal" inner ring, to provide tightness. This solution offers durability and is guaranteed and tested also for diving centers. Pre-shaped legs improve flexibility for easier kicking. Neck with anatomic design, preformed at 120� in the neck area for maximum comfort. The closure presents a noticeable improvement of the design that reduces the entry of water at this critical point. The closure flap is now much wider and the nape area is prolonged to prevent infiltration when the neck is tilted underwater. YKK back zip with under zip lining and water-stop system. Anti-abrasion reinforcement on the knees. Knee and shoulder area with Tatex� anti-wear elastic reinforcements. This type of reinforcement does not limit the elasticity of the Neoprene, provides sufficient reinforcement and facilitates the positioning of the suit.