Fiber Content Glossary

Acrylic is a synthetic / man-made fiber that provides softness and warmth with little weight, and high durability. Acrylic’s inherent properties allow it to hold brighter and more brilliant colors than its natural fiber counterparts.

Angora is the soft hair of an Angora rabbit. Used with other fibers, it provides a soft and comfortable fluffy look. The rabbits molt their fur and farmers cut the hair.

Bamboo is softer and more breathable than cotton and has a natural sheen tot he surface, so it almost feels like silk or cashmere. Bamboo is hypoallergenic and naturally microbial.

Cashmere is the soft hair of a Cashmere goat. It provides natural, light-weight insulation with bulk and is considered a luxury fiber.

CLIMAYARN® combines the advantages of natural Merino wool with the strength of Polypropylene high-performance fiber. Wool’s thermo-regulatory effects
conserve heat in cold weather, while Polypropylene rapidly wicks excess
moisture away from the body and largely prevents heat accumulation at high temperatures.

COOLMAX® is a brand-name of a polyester blend designed to wick moisture away from the skin. The performance of COOLMAX® fabric is inherent in the structure itself. The specially engineered fibers allow fabric designers to create high-performance fabrics that are soft, breathable, and moisture wicking. COOLMAX® is a trademark of The LYCRA Company.

Cotton is a lightweight, moisture absorbing fiber. It’s breathable, washable, and durable, and so is the most common fiber in socks. Because it is so great at absorbing moisture, it is generally blended with nylon to help move the moisture away from the foot. Cotton is gathered from around the seeds of the cotton plant, and is 90% cellulose (a plant fiber). Cotton is grown in plantations all over the world, but droughts, pests, and frosts can impact production, sometimes driving up the price.

Elastane (also known as Spandex) is a man-made fiber with elastic properties that is often used in place of rubber. Used with other fibers, it provides elasticity, recovery, and close fit, primarily in ribs to hold the leg in place and in the arch and ankle to provide extra support.

LUREX® is a synthetic fiber by The Lurex’ Company that incorporates a glittering metallic thread. LUREX® is the registered trademark of Sildorex-Lurex SA.

LYCRA® is a brand-name of high-quality elastane fiber. Socks made with LYCRA® fiber can stretch, but more importantly they have excellent recovery performance so that socks can keep their shape. LYCRA® is a trademark of The LYCRA Company.

Merino wool is a special, fine grade of wool that originally came from Merinop sheep. It shares all of the characteristics classic to wool that are listed above, but what makes Merino wool different is the luxurious softness and comfort provided by the fine diameter Merino fibers. Unlike traditional wool, Merino wool does not itch and is shrink-treated to hold its size and shape even after repeated washings.

Modal is a natural fiber, typically made from beech trees. It’s more water-absorbent than cotton and holds on to color better as well.

Mohair is the long, soft, silky hair of the Angora goat. It is stronger than wool and dyes more easily than any other specialty hair fiber.

Polyamide (also known as nylon) is a very strong, versatile, hard-wearing fiber. Socks made of polyamide can be thin and silky or bulky and highly elastic. Polyamide is often used with other fibers to give added stretch or to improve durability.

Polypropylene (also known as olefin) is a superior water repelling fiber that won’t accept moisture. It is used alone or with absorbent outer layers that work together to wick moisture away from your body. It is very strong and it is the lightest of any man-made fiber.

Polyester are two hydrophobic (water-repelling) fibers that are known for their durability and are extremely colorfast for vivid coloration.

Rayon is a natural cellulose filament fiber known for its sheen, its soft feel, and its high moisture absorption properties. Sometimes used as a generic term for ‘plant fiber’.

Silk is a very smooth, soft, and moisture absorbing fiber. It boasts a high tensile strength and acts as a natural thermal retainer that does not conduct heat. It is woven from the cocoon material of special caterpillars.

Wool is the original easy care fiber. Each wool fiber is made up of millions of coiled springs that stretch in use, but coil back to their original positions. Wool naturally has wrinkle resistance, colorfastness, shape recovery, and it breathes with your body. Wool yarn, when knot into a thicker sock, tends to be bulky and lofty. Air becomes entrapped and it becomes an ideal insulator. Wool socks also keep feet drier because wool absorbs as much as 30% of its own weight in moisture before it begins to feel damp.


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