The Women’s Performance Hike Light Cushion Margarita Crew Socks are constructed from a super soft blend of responsibly sourced Merino wool and recycled nylon for added sustainability. The socks feature cushioning on the entire bottom of the foot and are made using Smartwool’s Indestructawool™ patent-pending construction method which enhances both durability and comfort. Meanwhile, Smartwool’s unique 4 Degree™ Elite Fit System delivers a performance-orientated fit with specially developed flex zones at the ankle joint which ensure full freedom of movement. Additionally, the sock features a women’s specific fit with a narrower hill and slimmer style. Care Instructions Machine wash on a warm cycle, inside out. Do not bleach. Do not iron. Do not dry clean. About Smartwool's Merino Wool ZQ Merino is used to ensure the sheep that produce the wool are treated humanely, the wool growers are treated fairly, and the farms work to minimise their impact on the environment. Smartwool also helps protect the areas and activities we love by partnering with advocacy organisations that align with its values.