* Futures fins * Alpha 4.00 Quad Rear surfboard fins * Made of Futures exclusive composite material * Lighter than honeycomb * High performance fins * Symmetrical foil The Futures Alpha 4.00 Quad Rear surfboard fins fall under the balanced fit category, thus, it is a great all-around choice for a number of reasons. Made of Carbon Air Technology, combining a special Futures composite infused with carbon and air, the Alpha 4.0 QR is super lightweight and fast. The symmetrical foil on quads make sure that the fins have enough spring for making it around sections, while having predictability. This surfboard fins are ideal for medium-sized riders.