The New Era® 39THIRTY™ is our premier stretch-fit style available in a variety of sizes. The shape and fabrics are engineered specifically to create a comfortable fit. You'll regularly see NFL players wearing the 39THIRTY as part of their official sideline kit.Sizing:S/M = 53.9 - 55.8 (typically fits kids/women)M/L = 57.7 - 59.6 (typically fits men/adults)- 39THIRTY™- Stretch Fit- 5-Panel Structured Silhouette- Low Profile Contoured Pinched Crown- Pre-curved Visor- Colour: Blue- Style: 70891334