Snowboard GNU Asym Carbon Credit BTX 2019/20 SHAPE Asym Twin - identical toe and foot for controlled riding on both sides. Level 1 Asym Scale / Core & Sidecut - the human body is asymmetric, so it should be a snowboard. The turning mechanisms over the heels and toes are different, so the GNU brand has equipped the B-Nice with an asymmetrical construction that eliminates these differences. In practice, this means that the snowboard has an asymmetrical core, which is softer at the heel and has a deeper cut.