Step aside, Zero Gravity Foam, there's a new kid in town, and its name is Helion. Lighter, more responsive and with more impact protection, Helion takes the new Cloudswift everywhere it wants to go, and then further. With more cushion and a bit of a wider fit and base, the Cloudswift fills in the rest of the gaps to On's product line in being their do-everything trainer. Ready or not, here it comes.