Smartwool Bike Zero Cushion Low Ankle Socks Black Medium BLACK-M. Bike Zero Cushion Low Ankle socks are built with the 4 Degree elite fit system for a spot-on fit specific mesh zones for breathability a Virtually Seamless toe for comfort and an Achilles tab to reduce slippage. Add to that their ZQ-certified Merino wool construction - with its natural temperature regulation and odor control - and you've got socks that will keep you feeling good mile after mile. Specifications for Smartwool Bike Zero Cushion Low Ankle Socks: Manufacturer: Smartwool Gender: Unisex Age Group: Adults Color: Black Features of Smartwool Bike Zero Cushion Low Ankle Socks Indestructawool technology with extended durability zones 4 Degree elite fit system for a dialed-in performance-oriented fit Mesh zones for added breathability Shred Shield technology reduces wear from toes Virtually Seamless toe for enhanced comfort Achilles tab prevents sock from slipping into footwear Package Contents: Smartwool Bike Zero Cushion Low Ankle Socks Smartwool SW0019640011-(001) BLACK-M: Bike Zero Cushion Low Ankle Socks Black Medium