50% Cotton, 50% Polyester Pre-Shrunk Classic Crew Unisex Fit 1 x 1 Athletic Rib Knit Collar with Spandex Size Guide: LENGTH (inches) WIDTH (inches) S 27 20 M 28 22 L 29 24 XL 30 26 2XL 31 28 3XL 32 30 This product is made to order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!