- 100 day returns - With an easy email sign up
- FREE 3-year extended warranty - With an easy email sign up
- Price match promise - With an easy email sign up
Product details
- Fabrics:
- 68% Merino Wool
- 30% Recycled Polyamide
- 2% Elastane
- Indestructawool technology
- 4 Degree Elite Fit System
- Enhanced comfort
- Mesh Venting
- Heavy Cushion
- Breathable
- Seamless
- Height 8.5"
- Durable
Product information
Designed to help you venture further and stay warmer, the PhD Outdoor Heavy Crew features heavy cushioning and the power of Merino to help keep your feet dry and comfortable, no matter if you’re out trekking through the woods or trudging through the snow. Featuring Indestructawool technology for ultimate durability in high wear areas, the 4 Degree elite fit system for a dialed fit, and Smarwool signature Virtually Seamless toe for extraordinary comfort in any trail shoe, this sock can handle it all.
Product features
In need of product advice? Chat live with our team of dedicated experts.
Click the 'Support' link in the bottom right-hand corner of your screen to start a chat. Monday - Friday 9am-7pm, Saturday - Sunday 9am-5pm.
Reviews
About the brand

Smartwool’s values:
- Openness: Smartwool builds and maintains trust through transparency about the company, its vision, and its direction.
- Advocacy & Action: Smartwool believes in doing everything we can to preserve our one-of-a-kind environment, so everyone can experience the joy of the outdoors.
- Inclusivity & Fun: Smartwool believes in being compassionate, actively kind, generous, and accountable to all people.

Let us know you agree to cookies
We use marketing, analytical and functional cookies as well as similar technologies to give you the best experience. Third parties, including social media platforms, often place tracking cookies on our site to show you personalised adverts outside of our website.
We store your cookie preferences for two years and you can edit your preferences via ‘manage cookies’ or through the cookie policy at the bottom of every page. For more information, please see our cookie policy.