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Here's what other sites are saying:
The run-specific fit PhD Run Grad Compression UL socks from SmartWool employ a powerful combination of performance-enhancing merino wool and recovery-enhancing compression.
- REI refers to the men's version
On Sale. Free Shipping. Smartwool PhD Run Graduated Compression Ultra Light Sock FEATURES of the Smartwool PhD Run Graduated Compression Ultra Light Sock 4 Degree elite fit system uses two elastics for greater stretch and recovery Run-specific fit Patent pending ReliaWool technology in high impact areas provides longer lasting protection to keep feet comfortable Mesh ventilation zones designed specifically for male runners provide optimum temperature regulation and moisture management Virtually seamless toe 20-30 mmHg graduated compression rating 200 needle construction provides highest knit density while maintaining ultra light weight
- Moosejaw refers to the men's version
Whether you're recovering from an ultra or a simple backyard race, the PhD Running Graduated Compression Ultra Light Sock from SmartWool keeps your blood flowing. With built-in graduated compression technology, these socks help regulate your core temperature by minimizing lactic acid buildup and stabilizes your heart rate. Non-cushion, over-the-calf Merino wool blend are lightweight and wick excess moisture.
- Mountain Gear refers to the men's version
Built to improve blood circulation, provide extra muscle support, and reduce recovery time after hard runs or training, the SmartWool PhD Run Graduated Compression Ultra Light Sock provides top-of-class comfort on the trail and after your workout. The 4 Degree Elite Fit system uses special elastics to improve fit and recovery time, while the Reliawool reinforcement protects high-wear areas. Virtually seamless toe minimizes rubbing.
- Backcountry.com refers to the men's version