I live in the midwest and our summers are hot and humid and the sun is a real killer.  I wanted more sun protection, so bought this shirt to ptotect more of my skin. I often see the younger people working on building their skin cancers by exposing as much skin as possible to the cooking rays of the summer sun.
  I found the long sleeves kept in way too much heat and there was little air flow. I bought a size larger than I normally wear, so it would fit loosely. I ended up cutting the sleeves off about halfway between my elbow and wrist. Being the sleeves are large this allows a good deal of air flow up the sleeves and feels great.  I just put on lots of sunscreen on the exposed area of skin, including hands and wear my gardening gloves.  I only wear the shirt for gardening and yard work in the hot summer. I am happy with the purchase and delivery.