DESIGN & MATERIALS: Constructed from durable neoprene with a smooth skin collar and flatlock stitching Loop and hoop closure with leg seals ensures a secure fit Key pocket provides an extra way to store small items Sleeves, underarms, and shoulders made from quadra flex 4-way stretch material for durability, mobility, and comfort 2mm neoprene throughout body and leg for added warmth 1mm neoprene sleeves, collar, and gussets for added warmth Fair-skin front and back panels provide warmth in windy conditions Heavy-duty back zipper secures suit in place Velcro(R) neck closure for strong hold