A light cushioned PhD Running Light Mini is the perfect running sock for chilly weather and longer distances. Thanks to Realiwool Technology in high density impact zones, these socks are sure to outrun your running shoes. 

Features: 

• 70% Merino Wool 
• 28% Nylon 
• 2% Elastane 
• 4 Degree Elite Fit System    
• ReliaWool Technology      
• 1 x 1 Ribbed welt   
• 3.75" Overall height   

Size: 

• Medium - 6 - 8.5 (US)  5 - 7.5 (UK)  
• Large - 9 - 11.5 (US)  8 -10.5 (UK) 
• X-Large - 12 - 14.5 (US) 11 - 13 (UK)