Star Labs Men's Full- Zip Cotton Jacket SIZING - *Fit* runs true to size; you should order whatever size you normally wear in a Men's T-shirt. S - 18" x 28" / M - 20" x 29" / L - 22" x 30" / XL - 24" x 31" / 2XL - 26" x 32" / 3XL - 28" x 33" / 4XL - 30" x 34" - Size measurements are approximate due to manufacturing variations. Shirts are 100% pre-shrunk cotton; Athletic Heather Gray is 90/10 pre-shrunk cotton/polyester blend All Garments are designed, printed and shipped from the United States. Machine wash cold inside out; Tumble dry on low heat Perfect gift for all holidays and occasions; Satisfaction is Guaranteed!