The most popular template of the Side Bites, the SB1 is a great all around fin for the 2+1 set-up.
Height: 3.57 in, 9.10 cm
Base: 3.91 in, 9.90 cm
Area: 10.77 sq in, 69.48 sq cm
The White Composite (Thermotech) fins have a consistent flex that hold great on the bottom, and then release through turns.