100% Rayon Button up collar Printed graphics Please refer to the size chart for accurate measurements 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 Shoulder (in/cm) 17.7" / 45 cm 18.5" / 47 cm 19.3" / 49 cm Pit to Pit (in/cm) 21.7" / 55 cm 22.4" / 57 cm 23.2" / 59 cm Back (in/cm) 27.2" / 69 cm 28.0" / 71 cm 28.7" / 73 cm Sleeve (in/cm) 20.9" / 53 cm 21.9" / 55.5 cm 22.4" / 57 cm