Hi again Alex! The cold thing on descents is partly because you can get pretty sweaty climbing and feel cozy enough, then Brrrrrrrr, flying downhill,cold and clammy and if you start shivering, your steering isn't what you wish it was! I use arm warmers pushed down to my wrists and a vest in my jersey pocket for the climb, then pull up the armwarmers and put on the vest for the descent. I hate bulk in my pockets, so I sort of shrink wrap my vest in saran wrap into as small a tube shape as I can. Have fun! Tokie