We`ve maximized the comfort of all our socks, re-engineering them using new yarns that increase stretch, loft and softness while still maintaining exceptional durability. The Multisport Ultralight Micro is our thinnest sock-perfect for aerobic activity in warm weather. Fabric: 55% Merino wool; 43% Nylon; 2% LYCRAA(R) Layer: Socks Best for: Running & Fitness, Outdoor & Hiking, Travel & Lifestyle Benefits: Ultra lightweight, breathable, naturally odor-resistant, LYCRAA(R) enhances fit and dry time Features: Breathable ventilation zone; Reinforced heel and toe; Achilles and instep support prevents slipping; LIN toe seam prevents chafing Height: Mini - 6` Cushioning: Ultra Lite Care: Machine wash. Tumble dry on low, inside out. Exact instructions on the care label.