If you want to stay cool and get great UV protection, get the De Soto Arm Coolers. I use them on every ride and even when it's extremely hot, they stay cool. It's all in their material, which has tiny holes that allows the sweat to come out, which keeps it cool as the air passes over it. I would recommend ordering 1 smaller size they what would fit as they tend to stretch a little over time. I am using mediums.