80% nylon, 15% olefin, and 5% lycra
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The Twelve Olefin has a managed compression 12-inch cuff which fits over the calf.
Olefin produces a fast drying, lightweight sock with superb abrasion resistance and long-lasting durability. As a fiber, Olefin retains less than .01% of its weight in moisture and resists deterioration from chemicals and perspiration.
The combination of nylon and spandex with the Olefin fiber helps create a softer, more comfortable sock with incredible breathability for everyday wear.