Purchased several of these tops for a photoshoot and had extra sizes that were not worn or used. Josh Brown sizes are as this XS/S, S/M, M/L. This shirt is a S/M. FULL-LENGTH VERSATILE CREW NECK TANK WITH AN INVISIBLE ZIPPER. FLEXRIB® FABRIC WAS DESIGNED WITH FUNCTION AND COMFORT IN MIND. IT'S SOFT, STRETCHY AND MADE TO MOVE WITH YOU. YOU'LL WANT TO WEAR IT ALL DAY, EVERY DAY. COLOR: PEARL GREY FLEXRIB® SIZING: X/S (0-2), S/M (4-6), M/L (8-10)