The WTees GYM Muscle Shirt is so comfy you’re going to want to wear it everywhere, be it on your couch, out on a walk, or during a yoga class. The relaxed fit and low-cut armholes gives it a casual, urban look. 100% air loom combed ring-spun cotton Fabric weight: 4.2 oz/y (142 g/m) 32 singles Relaxed fit Side-seamed construction Wide, low-cut armholesSize Guide- Select Size According to Your Chest MeasurementSHIRT WIDTHSHIRT LENGTHCHEST TO FITS (inches)182634-37M (inches)202738-41L (inches)21 5/82842-45XL (inches)23 5/82946-492XL (inches)25 5/83050-53SHIRT WIDTHSHIRT LENGTHCHEST TO FITS (cm)45.76686.4-94M (cm)50.868.696.5-104.1L (cm)53.371.1106.7-114.3XL (cm)58.473.7116.8-124.52XL (cm)63.576.2127-134.6