Our medium weight Merino wool toe sock in crew length from Vibram. Features a just under the calf height made from a premium Merino wool blend for all day comfort in all conditions. 

Merino Crew Toesock Specification:

70% Merino Wool
25% Nylon for durability
5% Lycra for a snug active fit

Sizing Guide:

Small:     (EU 35-37) (US Mens 5-7) (US Womens 6-8.5)
Medium: (EU 38-41) (US Mens 7.5-9.5) (US Womens 9-11.5)
Large:     (EU 42-45) (US Mens 10-12) (US Womens 12 )
X/Large:  (EU 46 ) (US Mens 13 )

*When in doubt we recommend going up a size if between sizes especially if you have a wide or high arched foot shape.