Open water triathlon wetsuit.   Butted, glued and blind stitched construction 100% super stretch neoprene material 4mm Smooth Skin for low drag co-efficiency in water 2mm Lycra lined underarm panels for best flexibility  2mm smooth skin arm panels for best flexibility Friction free smooth skin neck Adjustable neck fastener Smooth skin for low drag co-efficiency in water Zip barrier system - reducing water ingression Below Calf cut to help in speedy undressing