New Era 39Thirty mesh back hats are a comfortable, mid-profile, semi-fitted hat. They look great and are more breathable than a full cotton back hat. They come in 3 sizes: S/M, M/L and L/XL.
Hat Sizing
S/M: Hat size (6 7/8 - 7 1/4) Circumference inches (21 5/8 - 22 3/4) Circumference centimeters (54.9 - 57.7)
M/L: Hat size (7 1/4 - 7 5/8) Circumference inches (22 3/4 - 23 7/8) Circumference centimeters (57.7 - 60.6)
L/XL: Hat size (7 5/8 - 8) Circumference inches (23 7/8 - 25) Circumference centimeters (60.6 - 63.5)
