Based upon my favorite layering bottom, the stash pants, this is a heavyweight version featuring a denser fabric. Simply put, I have worn these on the coldest days without a problem whatsoever. It so happened I first tested them on a su-per warm day and I did not overheat in the least. Features like the magnetic fly closure, the chafe-free softlock seams, stretch 360º, and the fact that it is quick-drying and highly breathable make these pants a must-have for anyone riding in the bitter cold but wants the versatility of warm weather perfor-mance. The Agion® stink-free finish is also a nice touch.