This is a stretched out version of the Twinzr Shortboard with less curve between the feet and with more forward volume flow. It is meant for when the waves require a higher speed  and power threshold. This semi step up is fast, and smooth with a lot of hold. My personal favorite for good waves is 6’1” -18 7/8”- 2 3/8” and can jump up into the 6’11” range for bigger waves.