Outdoor Research Hat Sizing Chart

  • Measure around your head where the headwear would fit comfortably.
Unisex SML MED LRG XL
US Hat Size 6 3/4"-7" 7 1/8"-7 1/4" 7 3/8"-7 1/2" 7 5/8"- 7 7/8"
Circum 21 1/2"-22" 22 1/4"-22 7/8" 23"-23 5/8" 23 7/8"-24"
- 1 SIZE S/M L/XL
US Hat Size - 6 3/4" - 7 5/8" 6 3/4"-7 1/4" 7 3/8"-7 5/8"
Circum - 21 1/2"-24" 21 1/2"-22 7/8" 23"-24"

Last Updated: April 21, 2020