These mid height merino blend socks are good for warmer weather. Thanks to the Merino wool’s excellent breathability and moisture permeability they feel comfortable. Technical weaving provides a better fit while wading. The Zero sock has a strong Polyamide outer surface for hard usage. The Merino wool which is used on these socks is mulesing free. 33% Merino Wool 33% Acrylic 32% Polyamide 2% Elastane