This Captain Fin Pivot Tri fin set is perfect for experienced surfers who want to take their performance to the next level. With a Honeycomb construction, this Large size fin set is designed with an optimal balance of speed, drive, and release. With a base of 4.8 inches and a depth of 4.7 inches, this fin set will give you the power and control you need to take on any wave. The Pivot Tri fin set is a great choice for all types of conditions, and will help you master your surfing technique.