The Run Buy 2 Get 2 Free Bundle contains 4 total pairs of Run Socks.

Fabric Content:
Our Run performance socks use 49% Premium Peruvian Baby Alpaca Fiber, 48% Nylon and 3% Elastane.

Care recommendation:
Wash cold, hang dry - (note: machine washing and drying tests have shown no damage).

Made in USA with imported yarn:
Designed in Wisconsin by outdoor enthusiasts and made in North Carolina.

Every pair is crafted with care right here in America using Peruvian baby alpaca yarn.

Free shipping on US orders over $85.

We make returns and exchanges easy.

Buy with confidence, we offer a 99 day money back guarantee. Within 99 days of purchase, return your socks for a refund or exchange for a different size, no questions asked.

How does Hollow Alpaca outperform every other material?

After two years of testing against cotton, wool, and synthetics, it became clear: nothing matches alpaca’s natural ability to keep feet dry, comfortable, and stink-free.

STAYS DRY LONGER

Unlike cotton, which traps moisture, alpaca wicks sweat away from your skin and dries fast—keeping your feet dry and blister-free all day long.

TEMPERATURE REGULATING

Thanks to its hollow-core structure, alpaca insulates in the cold and breathes in the heat, making it the rare material that’s truly comfortable in every season.

ODOR-RESISTANT & ANTIMICROBIAL

Alpaca naturally resists bacteria and odor buildup, unlike synthetics that need chemical treatments. That means fewer washes, less stink, and fresher socks for longer.

UNMATCHED SOFTNESS

Softer than wool and more comfortable than synthetics, alpaca delivers premium comfort without the itch—no matter how far you go.

How do I wash and take care of my Hollow Socks?

When caring for your Hollow Socks, we recommend washing in cold water and hanging to dry. (Note: machine washing and drying tests have shown no damage.)

How do I know what size to get?

Hollow’s sizing guide:

Medium: Men 8-10 (US) | Women 7-10 (US)

Large: Men 10.5-13 (US) | Women 10.5-12 (US)

Extra Large: Men 13.5-15 (US)

The size chart is in one of the photos (seen on each product) HERE.

What is your return policy?

We offer a 99-day money-back guarantee—no questions asked. If you're not satisfied within 99 days of purchase, you can return or exchange your socks for any reason. Just provide proof of purchase and start your return through our Returns Portal.

If it’s been more than 99 days or you're experiencing a product issue, reach out to us at support@hollowsocks.com—we’re happy to help.

You can see the full return policy here.

What is the Hollow warranty?

If there’s a defect or issue with your socks, we’ve got you covered. We’ll replace any pair with a product error within 99 days of delivery—no hassle, no stress.