I loved the fit and comfort of these sun sleeves from the start and bought a few pairs immediately after my initial trial. I had no complaints until after a month and a half of repeated use, I noticed the forearms had thinned to the point that I wonder if it still offers protection from the sun. You can see through the fabric now with a large patch that is noticeably thinner on both forearms. Not sure what wore out the fabric, the washing method, the sun exposure, friction, etc. They have been washed using a gentle cycle in a protective wash sack and air dried in a sunroom on a clothes line, no dryer used. This happened to the white pair. I'm currently using the black pair to see if it has similar issues. I'm hopeful that it was an isolated occurrence on that one pair of sun sleeves because they have lived up to the hype regarding comfort and breathability. I would give this product a 5 star rating, but because of the thinning issue, I will give an inconclusive 3 star rating until I've tested out my remaining pairs.