NOT your old-school fish from the 70's. Dual Concave runs the entire length of the frame. Modern Rocker. Concave is substantial in the tail and transitions to zero at the nose. For such a small board it feels "floaty". Works well with traditional fish twins or thrusters. 

Kit includes: Full internal structure precision laser cut from 1/8" Mahogany exterior ply OR Marine Grade Paulownia 2.7mm Ply for an extra $10usd. 
Wood for outer covering sold separately ( See Paulownia and Balsa Wood Kits ) Fiberglass materials also sold separately. See Fiberglass Supplies. Full building instructions included.