Bought these shirts in other colors, they are 100% cotton and thick. However, the last purchase was a 60/40 mix and not nearly as heavy as the old shirts. The description on the website still says the shirts are 100% cotton so be careful what you want as you will be misled here.
Van Heusen Traveler Stretch Men's Shirt
47 Review
Men'S Regular Fit Short-Sleeve Dress Shirts By Allsense - Look Stylish And Professional!
41 Review
Calvin Klein π Herringbone Sleeve Men's Dress Clothing
50 Review
Gildan Performance Men's π Clothing and Shirts with Moisture-Wicking Polyester
44 Review