CARBON FIBER Surf board fins FCS style by &lsquo;BPS&rsquo; MEDIUM SIZE - Carbon Fiber with light weight Hexcore and Netted Fibreglass &lsquo;RADIOACTIVE YELLOW&rsquo; Surfboard fins Fcs fins surfboard BPS have wrapped a light weight Hexcore in a serious amount of carbon fiber and a netted fiberglass skin to produce a light weight fin with amazing rigidity. Fins are available in medium size (similar to FCS M5's) and large size (similar to FCS M7's in size). Trialled, tested and thrashed by BPS to make sure theyve got what it takes and are built to last. 'Don't buy it unless it's Bullet Proof'. Buy with complete confidence - all products from Surf and Snow are stored and shipped (quickly and reliably) to you by Amazon in the US - and all BPS products are guaranteed with a 'Bullet Proof' guarantee. If it doesn't deliver what it is supposed to, it will be replaced or you'll be refunded - your choice