Merino Wool Baseball Cap
Buy Now, Pay Later
Made from certified Australian Merino Wool, our cap offers exceptional breathability, moisture control, and all-day comfort—perfect for any season. As the first Woolmark-certified cap in the U.S., we set a new standard in quality and performance. Designed with a patent-pending knot-style back, the feature provides a secure, customizable fit, ensuring both function and fashion. Whether you're on the go or just elevating your everyday look, our cap is the perfect blend of versatility, innovation, and timeless style.
New Favorite
"I’m a huge fan of Merino wool for socks and base layers, so I was excited to try this cap. It’s just as good as I hoped—super breathable, lightweight, and doesn’t hold onto odors like other hats. The unique back tie design is also a nice touch."
- Julia M., Verified Customer
Size & Care
Size
| Size | Circumference |
| One Size | 51 cm / 20.01 in - 60 cm / 23.6 in |
If you have any other sizing questions, please email us at hello@ondo.com.
Care
Manufacturing
and ethically manufactured in China.
Fabric
75% Australian Merino Wool, 19% Polyester, 6% Spandex
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THE DETAILS
PREMIUM MATERIAL
Made from Australian Merino Wool, our cap offers a soft, lightweight feel with natural breathability and moisture-wicking properties to keep you cool, dry, and comfortable in any climate.
UNIQUE KNOT-STYLE
Designed with a unique, adjustable back tie, our cap provides a secure yet flexible fit without the bulk of traditional snapbacks or velcro straps—you can fine-tune the fit without ever taking it off.
PERFORMANCE-DRIVEN
Odor-resistant, moisture-regulating, and temperature-adaptive. Whether you're traveling, working out, or running errands, our cap is designed for any activity.
SUSTAINABLY SOURCED
Made from Woolmark-certified Merino Wool, our cap is crafted with a commitment to ethical sourcing and sustainability. Naturally biodegradable and renewable, Merino wool is an eco-conscious alternative to synthetic materials.