Perfectly fits the SP-4 helmet series.
"These goggles combine the advantages of normal goggles and a visor. Their unique fixture prevents them to fall of when putting them up on the helmet (like a visor) and give a perfect fit when on, so no snow and fog gets in on a snowy day (like normal goggles do), Unlike a visor these goggles will never come down when wearing them up on your helmet while skiing on a bumps. The best of both worlds for me."
