Outer: 100% Nylon Lining: 100% Polyester Zip up closure Ribbed cuffs and hem Embroidered graphics Reversible Please consult our size chart to find your best fit How to Measure Yourself Pit to Pit: Measure from one armpit to the other across the fullest part of your chest. Sleeve: Measure from the shoulder seam to the end of the sleeve. Back: Measure from the base of the neck to the bottom of the garment. Size Chart Size M L XL Pit to Pit (in/cm) 24.4" / 62.0 cm 25.2" / 64.0 cm 26.0" / 66.0 cm Back (in/cm) 27.6" / 70.0 cm 28.3" / 72.0 cm 29.1" / 74.0 cm Sleeve (in/cm) 35.4" / 90.0 cm 36.2" / 92.0 cm 37.0" / 94.0 cm