love my tek vest.. definately took a little gear change to accomodate it. i love it though now that i got my clothing figured out. under armor base layer (short or long depending on temps) and a shell.. and if the weather is 20 or above i just ride with a jersey,vest and a bigger jersey over it. love it. also, having the support on your shoulders rocks for wearing a backpack that has a bunch of stuff in it.. once you have it. you cant go without one!