I've warn these warmers in as cold as 25 degree weather and they've been perfect. I would recommend sizing them down as they tend to fit slightly larger than you would expect and eventually will probably stretch slightly after being washed. I wear mine in the shower and hang dry after use and they've lasted several years now Also work great in tanning booths to get rid of your bike tan come summer time ;)

These arm warmers are like putting your arms inside of a polarbear skin. They cut the wind and don't slip down like other warmers do. They roll up very compact and can be stuffed anywhere. Some days you just want to wear one because it's too toasty for your own good.

I wore these through the cold seasons cycling and recently ran a half mary distance with them. Let's just say my arms started sweating and I was very easily able to remove and store them without missing a beat. I am about to purchase the leg warmers for both cycling and running. PI is a great company with great products!

Now my arms are as warm as my legs! I managed to get out before the weather turned up the heat in Florida today.

They do exactly what they are supposed to - stay in place and keep the chill away from your skin. After about 10 miles I started to heat up and taking them off while in motion was possible (although if you don't have the balance don't try this at home!)

Once removed they fit easily in a cycle jersey pocket without being cumbersome. Great price for a great product. If you see yourself riding in cooler weather I highly recommend these.

I will have to agree with the other reviews that these arm warmers to not slide or slip down. It's about time someone got the arm warmer fit right! Thanks Pearl Izumi!

I just made use of these arm warmers on a 5k run and they worked out beautifully! I was able to put them on and they stayed in place the entire race!

Excellent fabric quality. No chaffing at all!

Just got these PI arm warmers and they are a great product for the money. Pearl Izumi is a great company with great products.Support them! Hook these up for cold mornings and fall/winter rides. They stay in place and are easy to pull on and off when on the bike.

I plan to do a lengthy tour someday and these will be a great asset for night riding to keep me warm and safe with reflective lettering.

You won't be disappointed!