RRD - Edge Thruster Set
The fins of your surf board are like the wheels for a F1 race car, depending on the conditions you will use different type of thickness, size or flex.
The fins that you will use for your board depend on your weight, style, and especially the conditions you are used to riding in.
The RRD edge fins are the perfect compromise between a good flex and rigidity.
RRD fins have the right balance between a very flexible fin, for cold water and a stiff fin for warm water. I am used to changing fins depending on the wave size; using big fins for big waves and small fins for small waves while trying to keep same style and flex to be sure I have control at high speeds down the line of a big wave or quick turns when the waves are small.