Expanding on the best-selling durable lightweight collection, the Helium Wind Cap rounds out its category as minimalist cap reinforced with Diamond Fuse technology. This piece is perfect for the ounce-counting ultra runner who needs a hat that will dry on the move, and stuffs away small. It's even designed to crush down to the size of the pocket in its cousin product - the Helium Wind Hoodie. Two other favorite features include a 360-degree sweatband made with self-cooling ActiveIce™ technology, and a rear shock cord that can be adjusted for size with a single hand on the run.
Pertex developed Diamond Fuse technology as a unique way of improving the durability and abrasion resistance of fabrics without adding any unnecessary weight. Diamond Fuse fabrics use yarns with unique diamond shaped filaments that lock together to create a durable and highly abrasion resistant fabric. This engineered structure allows Diamond Fuse fabrics to remain very stable over extended wear and washing.
Recycled Content
This gear was made with recycled content, meaning part or all of its construction was made of materials that have been recycled. Each of our products made with recycled content uses the same quality as seen in other Outdoor Research gear, but with less impact on the planet. Outdoor Research is actively working towards standards and certifications that ensure the legitimacy of our recycled products. When you buy gear that’s made with recycled content, you’re reducing waste, energy usage, and dependence on petroleum.
Q&A
Guarantee
The Infinite Guarantee®
Outdoor Research® gear is guaranteed to perform throughout the lifetime of the product. Get your gear back on track by filing a claim on our Warranty Page
Have a question? Problem? Other request? We’re here to help you find a solution.
Our customer service is waiting for your call at 855-967-8197, on weekdays Monday-Friday between 8am-5pm PST. If you prefer email, you can send your query to info@outdoorresearch.com
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Care
Machine wash cold. Do not bleach. Drip dry. Do not iron. Do not dry clean.
Hats size guide
Hats
Measurement shown in:In
Cm
Unisex
S
M
L
XL
US hat size
6¾” – 7”17.2 – 17.8
7⅛” – 7¼”18 – 18.4
7⅜” – 7½”18.7 – 19
7⅝” – 7⅞”19.3 – 20
Circum
21½” – 22”54.6 - 55.8
22¼” – 22⅞”56.2 - 58.1
23” – 23⅝”58.4 - 60
23⅞” – 24”60.6 - 61
–
1 SIZE
S/M
L/XL
US hat size
––
6¾” – 7⅝”17.2 – 19.3
6¾” – 7¼”17.2 – 18.4
7⅜” – 7⅝”18.7 – 19.3
Circum
––
21½” – 24”56.2 - 61
21½” – 22⅞”54.6 - 58.1
23” – 24”58.4 - 61
How to measure
Measure around your head where the headwear would fit comfortably.
