The 2007 Gnu Danny Kass pro model features the Altered Genetics 2 core made from a combination of aspen and birch wood. This makes a very light yet strong core. The external internal sidewall construction that the Gnu Danny Kass features won't break even for the most aggressive of rail masters. The Gnu Danny Kass has a directional shape and progressive sidecut allows this board to have a mellow entry into the turn and a quick and snappy exit. Add on a quasi-isotropic (four way fiberglass) for all-around strength and you have the hottest freestyle weapon on the mountain.