The shirt sizes are too big. Order smaller

Nice rash guard. I ordered two sizes, good thing, I ended up with the small and it fits like a normal 'slim fit' medium shirt. The medium was WAYY too big to be comfortable as a rash guard.

I ordered the small and medium because I wanted a fit that I could wear in the water. Good thing I did! I normally wear a M / Slim shirt and the small fit just right. The M was just too baggy to wear swimming.

I'm 6' and 200 lb and size large fit perfectly. Comfortably loose, not a compression fit, fits great, dries quick, provides the sun protection I needed. Highly recommend.

This is a well made, light weight, sunblocking shirt that works well for swimming as it dries very quickly. Size may be slightly large but certainly not small, relaxed and a very comfortable fit.