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

Features: 

• 71% Merino Wool 
• 27% Nylon 
• 2%Elastane    
• 4 Degree Elite Fit System   
•  ReliaWool Technology      
• 1 x 1 Ribbed welt Achilles pad 
• 1.75" Overall height 

Size: 

• Small - 4-6 (US) 2-4.5 (UK) 
• Medium - 7 - 9 (US)  5 - 7.5 (UK) 
• Large - 10 - 12.5 (US)  8 - 10.5 (UK)