A gravity-oriented jacket, or one to have stashed for when it goes sideways on those all-day epics. The Tachyon protects you when MN (mother nature) gets mean, and the 4-way stretch leaves your perfect form unhindered. You're probably not going to want to pedal all day in this Jacket, but hammering out laps when everyone has stayed home, or keeping this in your pack for the just-in-case moments is what we made this for.