Patagonia Hat Size Chart

Adult's Hat Size Chart

  Small / Medium Large / X-Large One Size
Adult Head Circumference (inches) 21.75 - 22.75 22.75 - 24 21.75 - 24
Women's (inches)     21.25 - 23.25

Kids' Hat Size Chart

Hat Size Age Head Circumference
Small 4 - 6 yrs 20 - 21 in.
Medium 6-10 yrs 21-22 in.
Large 10+ yrs 22 - 23 in.