Yes we offer a great US Made Beach towel for your clients that have that requirement.
Both great in quality and peace of mind that you are helping the US economy.
Don't forget that patrons of your beach will gladly buy one of these Beach towels if you give them an opportunity. It will be a valuable keepsake, and one that they can say, "What a great time we had, you should have been there."
Here's a great article for pools around the country, but at the same time; have you thought about selling towels:
Or this fun article on Dog's Only Swim beaches,, and at the bottom of the article the recommendation to have Beach Towels available to buy to dry off their dog.