Product Information Size Cap circumference: 54-60cm Cap High : 28 cm Cap Long: 27 cm Attributive Color 7 Color Material Cotton Style: Casual Season: Spring / Summer /Autumn / Winter Scenes: Camping / streetwear / Party /Workplace Weight: 110g Head circumference knowledge: Gender/head circumference Small Normal Big Women 53cm-55cm 56cm-57cm 58cm-60cm Men 54cm-56cm 57cm-58cm 59cm-61cm Head circumference measurement method: The hats of our hats are all measured with a professional cap measuring device, the error is about 2-3cm, and the shopping money must confirm the cap and the head circumference. A: Hair root of the forehead B. 2CM below the starting point of the back head Please use the tape measure, standing or sitting position, use the tape measure from the front A, pass B around the head for a week, and then add 1 to 2CM to measure the maximum dimension of the head above the level of the two ears. moderately tighten the tape during the measurement, but do not let the head be pressed by the tape measure, and look at the corresponding scale of the end of the tape measure. The hair is also included in the measurement. Because the measurement is measured when wearing a hat.