Best thing for bikers since two wheels and an engine. These slide on and off for those cool morning here in Florida. I don't need to carry two shirts. I wear a t-shirt with these slide on then when the day warms up off they come. Easy to store in a small zipped locked bag in the bike for when I need it. No large jacket or bulky shirts to mess with.

I love these. I just finished a 3,000 mile trip and many days were over 100 degrees on the desert. I soaked these in water to make me a human swamp cooler. It didn't last long, but sure felt good. They also protected me from the sun which is also a cooling effect. I highly recommend these for when it is too hot for a jacket.

Product does help a lot and has cut down on sun burns when wearing short sleeve shirts, but becareful when ordering that you get the right size. I am 5'7" with a 32-33 sleeve length. Purchased a Large the 1st time and it was a bit to long. Re-ordered the Medium and it fixs right. So make your choice from their. I would say average build with sleeve length of 33-34 I would got for the Large, anything under 32 I would order the Small. Anything larger then 34 I would be looking at XL and above. Also consider the width of your biceps the elastic around the bicep can cut in after a while if to small.

They are outstanding. I purchased Large and Extra Large Rod over 500lm yesterday with a white T/Shirt and white Sleeves The air goes through the material