Cotton tees shrink. It's just a fact. A 100% cotton tee can lose up to 5% of its size in the first wash, especially if you use hot water or toss it in the dryer. That can turn a perfect fit into something snug in the wrong places.

To keep shrinkage in check, wash your Windbar tee in cold water and hang it dry. If you're between sizes, keep shrinkage in mind—maybe size up to account for it. And if you're really unsure, order two sizes and return the one that doesn't work. Most online stores, including Windbar, offer free returns, so it's a low-risk way to get the fit right.