I have this same shirt in the long sleeve version and I love them both. The fabric wicks sweat and is not hot, even in our super humid Virginia weather. The lace sleeve is made of soft material and is very nice.
Loved the shirt it came in an XXL. We travel with 15 dressage show coats in the trailer all with matching custom made stock ties and ear bonnets. What retailers don't understand is that it is even more important for a larger rider to look good than a small one. And larger riders NEVER look at the price. If you made coats in 18-20 I would buy at least 3 or 4, I have tried several times to have a coat custom made ended up with a brown one that looks like a grocery bag.