They are fabulous.  Now have 3pairs and they protect my arms on the golf course.  

I purchased these for my husband and he wears them hiking and also in the car on long drives to visit our son in college.

Not enough elastic, they slide down. Otherwise, good product. I use rubber bands to keep them up.

I live in a desert with very low humidity and these are clammy. I cannot imagine what they would be like in a more humid climate.