Best Fabrics for Winter & Warmth

natural

Soft underfeathers from ducks or geese. The gold standard for insulation, offering the best warmth-to-weight ratio of any fill material.

natural

Fiber from alpaca fleece. Warmer than sheep wool, hypoallergenic, and naturally water-resistant. A sustainable alternative to cashmere.

natural

The rarest and most expensive animal fiber in the world, from the vicuña of the Andes. Finer than cashmere, incredibly soft, warm, and lightweight. A single coat yields only 250g of usable fiber every 2-3 years.

natural

Fiber from the downy undercoat of yaks. Warmer than merino, softer than cashmere of the same grade, and more sustainable.

natural

Fiber from the undercoat of Bactrian camels. Naturally warm, lightweight, and luxurious with a distinctive golden color.

natural

Ultra-fine wool from Merino sheep. Softer and less itchy than regular wool, with excellent temperature regulation and moisture management.

synthetic

Premium synthetic insulation originally developed for the US Army. Ultra-fine polyester fibers that mimic down performance while maintaining warmth when wet.

synthetic

Thick closed-cell foam rubber laminated with nylon or polyester jersey, used primarily in wetsuits. Traps a thin layer of water against the skin that body heat warms, providing thermal insulation in cold water.

natural

Natural fiber from sheep. Excellent insulator that regulates temperature and wicks moisture. The standard for cold-weather clothing.

synthetic

3M's proprietary microfiber insulation made from fine polyester and polypropylene fibers. Traps more warm air in less space than traditional insulation, widely used in gloves, boots, and winter jackets.

natural

Textured knit with twisted stitch patterns resembling braided ropes. Traditionally wool for fisherman sweaters. Cables trap air for insulation.

natural

Fiber from Angora goats. Known for its brilliant sheen, resilience, and ability to accept dye exceptionally well.