The F4 Alpha is a small size Balanced fin with a Ride Number of 5.5. Alpha's C6 composite material is carbon and air infused making it lighter than Honeycomb. The responsive flex characteristics of C6 combine with the neutral F-Series template to create one of the most exciting new products on the market. All Alpha products are designed and manufactured exclusively in Huntington Beach, Ca USA.
 
Thruster Small (95-135 lbs) (45-60 kgs) Balanced (7-4) All Around. Neutral