The Bionik offers triathletes a wetsuit of the highest quality with a reasonable price tag. This wetsuit has a classic concept, meaning textile on the inside, and the outside made of the Japanese Neoprene Yamamoto #39, with an SCS coating also covering the entire outside. The neck, shoulders, and arms are Yamamoto GIGA #40 neoprene. No other wetsuit on the market offers this combination of neoprene for the price! The shoulders are also extremely flexible and allow for excellent range of motion. The forearms have the “Aero Design Propeller” to provide a better catch of the water during the pulling phase of the stroke. Bigger Velcro behind the neck for easier closure.Hips roll control – Aquaman has added a panel of Rubber Dome to the hips to help flotation and balance when you are on your side.