NMD Njoy PE Bodyboard The NMD Njoy bodyboard is an ideal intermediate level option. A polyethylene core with a single stringer will allow the rider to advance their riding in more testing conditions. Features Board Technology Core – 2.4lb Polyethylene Stringer – 1 x EXT Stringer Rails – 55/45 Double Rails Channels – Graduated Slick – HDPE Deck – IXLPE Crosslink Tail – Clipped Crescent 2.4lb Polyethylene PEMid-heavy-weight extruded foam compressed at 2.4lb offering a sturdy intermediate bodyboard. This foam is not waterproof and is ideal in cold climates.EXT StringerPultruded plastic and carbon composite rod offering rigidity and durability.55/45 RailsThis rail setup leaves less of your rail in the water and offers the rider less contact with the water and therefore better drive and speed throughout all conditions.