If you are ordering a flex fit hat, the Flex Fit hats  we use are the 6277 most commonly. The size for the flex fit hat, if that is the one you have chosen is shown below.

Contents: 63% Polyester / 34% Cotton / 3% Spandex

Sizes: S/M (6 3/4"-7 1/4"), L/XL (7 1/8"-7 5/8"), XL/2XL (7 3/8"-8")

The 6277 Flex Fit hat's, available in 3 different sizes.