Futures XO Coco Ho Mod Keel Fin SetFutures collaborated with North Shore professional surfer Coco Ho on these Futures Fins XO Coco Ho Mod Keel Fin Set for Cocos surfboard label XO COCO. XO COCO is a surfboard company designing equipment specifically for and with women. The new Coco keel fins are designed with smaller surface area for women and smaller surfers. Built in solid fiberglass construction. Fin Size Detail Height Base Area Angle Foil Keel Fins 4. 98" 5. 57" 20. 06" 6. 5 Flat