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Weighing in at less than an ounce, the Patagonia Airdini Cap provides weather protection and breathability in uncertain running conditions. This featherweight cap uses Houdini® Air fabric to block wind and light rain, while the Airshed material on either side allows airflow to keep your head cool and dry. Its elastic back pocket doubles as key or card storage, a ponytail opening, and a stuff sack that allows the cap to pack into itself. To prevent odor buildup, the Airdini Cap has been treated with HeiQ® which keeps nasty bacteria at bay.


  • 5-panel packable hat with weather resistance
  • Houdini® Air fabric on the bill and body block winds and light rain
  • Airshed material on the sides quickly removes sweat and allows airflow
  • Ultra-lightweight and packable construction fits into most pockets
  • Short flexible bill for efficient sun coverage
  • Stretch pocket in back acts as a stuff sack, key storage, or ponytail opening
  • Internal moisture-wicking headband removes sweat
  • HeiQ® treated material prevents odor for product lifetime
  • Front reflective Patagonia logo
  • bluesign®-certified material for sustainability
  • Weight: 26 g (0.9 oz)


  • Body/bill: 90% nylon ( 51% recycled), 10% polyester with DWR
  • Side panels: 100% polyester (87% recycled) with 4-way stretch and DWR
  • Back panel: 79% nylon, 21% spandex jersey with HeiQ® odor control
  • Fair Trade Certified™ sewn
Size Adult Head
One Size 21¾"-24" 21¼"-23¼"
Small/Medium 21¾"-22¾" 21¼"-22"
Large/X-Large 22¾"-24" 22"-23¼"