IBEX arm warmers
I use arm warmers a lot up here in the PNW around the house,outside,biking, & SNOWSHOEING!When trudging up trail i can slide the arm warmers down to cool off when stoping or going down hill(trail) i can slide the warmers up i usually pull a lightweight base layer long-sleeve over a base layer lightweight tee.This system works well for me.Ibex is QUALITY made in U.S.A. and by 2014 ALL of there products are to be made here in the U.S.or Canada.Wool doesn't stink it's very temperature regulating.I find these arm warmers a little on the heavy side (thick) other arm warmers i use are the SmartWool brand and those are thinner and breathe a little better but thats just me.Great product GET IT!
The BEST Arm Warmers
I use arm warmers for all of my morning mountain bike rides. They not only keep my arm warm when there is a chill, but they also breath very well when it starts warming up. I generally leave these on for my entire ride unless it gets above 70 degrees. These are, by far, the best that I have used so far. Much more durable and substantial than Smart Wool and much better fitting than Icebreaker. The only thing to be careful of is the size. They definitley run larger than I expected. I am 5' 10.5" and 160lbs. I generally wear a medium in most things and even a large on some. I originally ordered the medium size and they were way too big around my bicep, which measures 11.5". I returned those for a small which fits perfectly. I am sold on wool products with those from Ibex and Icebreaker definitely being the best out there.
Warm, unbulky, comfortable
Perfect for cold-cool morning commutes (~30-40F); warm, unbulky, unbinding, doesn't slip, long enough to cover wrists, but stretchy enough to easily move away from watch. Easily adjusts on biceps to allow a bit of pit-venting between short-sleeve shirt sleeve and top of arm warmer. Packs small, stays unstinky. Can't comment on durability yet. I have size small, my biceps max at ~11". It just fits in the forearms and biceps - if it stretches out I may have issues with slipping.