I love my fly sheet. My boy is a freak about fly spray so I needed something to help him. This sheets not really a fly sheet but its a cooling sheet that double a a fly sheet. My horse is a danger magnet...him and his horse buddy love to fight and the only thing that happened was the strap broke...but I fixed it. He got his leg caught when he was rolling. Honestly, it's the best fly sheet out there for a price. And my horse is always comfortable when all the other horses are sweating during the day.
Kool Coat Light - Statelinetack.com
Edit: It's not made of mesh either...I have no idea what the fabric is but I love it!