DaSupaFins Hammerhead Bodyboard with Deluxe Leash & Stability Stringer - Shark New patented design! Patent # 61-171-801 Sturdy materials able to withstand up to 300 lbs riding weight. Includes one year replacement structural warranty. Deck consists of high quality Extruded Polyethylene (EPE) foam. Bottom is finished in High Density Polyethylene with two channels for better performance. Graphite stringer rod inside core for added resilience. Each board comes with a deluxe leash (with key holder) valued at $29.