If you want a super thick and well made Chamois shirt then this is the one for you. I bought the XL for my husband who likes to wear T-shirts under long sleeve flannel shirts. I wanted him to have something thicker than flannel that would last longer and this shirt is ideal. He loves the thickness and how soft it is. It was a little stiff at first but after one or two washes with fabric softener that did the trick. I liked it so much I bought a size L for myself to use as an over coat/jacket. Highly recommend!