100% Polyester Zip Closure 2 Zip Pockets Embroidered Branding Please refer to the size chart for accurate measurements Size Chart How to Measure Yourself Shoulder: Measure from shoulder tip to shoulder tip across the back. 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 S M L XL Shoulder (in/cm) 17.7" / 45.0 cm 18.5" / 47.0 cm 19.3" / 49.0 cm 20.1" / 51.0 cm Pit to Pit (in/cm) 20.9" / 53.0 cm 22.0" / 56.0 cm 23.2" / 59.0 cm 24.4" / 62.0 cm Sleeve (in/cm) 33.9" / 86.0 cm 34.6" / 88.0 cm 35.4" / 90.0 cm 36.2" / 92.0 cm Back (in/cm) 26.8" / 68.0 cm 27.6" / 70.0 cm 28.3" / 72.0 cm 29.1" / 74.0 cm