The Soulflex is smaller in area from base to tip allowing less resistance through turns. This fin flexes further down toward the base. making the board more responsive. Performs well in progressive longboards with side fins, single fins up to 6'6", and 5 fin boards with a center fin box.
If you are not 100% satisfied with your purchase you may return it for a full refund, or exchange within 30 days of receiving your order.