PrimaLoft is a brand of high-performance synthetic insulation made of ultra-fine microfibers that mimic down's softness, warmth, and packability while keeping much of their warmth when wet. Originally developed for the U.S. military as a water-resistant down alternative, it comes in many grades (such as PrimaLoft Gold) and increasingly uses recycled and bio-based fibers.
Hydrophobic down is regular down treated with a water-repellent finish so it absorbs moisture more slowly, retains loft longer when damp, and dries faster than untreated down. It narrows down's biggest weakness — failing when wet — making down more viable in humid and damp conditions, though it's still not as wet-reliable as synthetic insulation.
Duck down is down sourced from ducks, a more abundant and affordable insulation that, at the same fill power, performs essentially the same as goose down. It's very common in midrange and premium gear alike, typically available up to around 700–800 fill power, offering excellent warmth-for-weight at a lower cost than top-end goose down.
Goose down is down sourced from geese, traditionally regarded as premium because geese are larger birds that produce bigger down clusters, which can reach the highest fill powers (often 800–900+). At equal fill power, goose and duck down perform similarly, but the very highest-loft, lightest gear typically uses goose down, usually at a higher price.
Synthetic insulation uses fine polyester fibers, arranged as continuous filaments or short staple clusters, to mimic down's air-trapping loft. Its key advantage is that it keeps much of its warmth when wet and dries fast, plus it's cheaper and hypoallergenic. The trade-offs versus down are more weight and bulk for the same warmth and a shorter useful lifespan.
Down insulation is the soft, fluffy plumage found beneath the exterior feathers of geese and ducks, used in jackets and sleeping bags for the best warmth-for-weight of any insulation. It lofts to trap air efficiently and packs down small, but loses most of its insulating ability when wet and dries slowly — unless treated as hydrophobic down.
Schoeller Dryskin is a premium Swiss-made softshell fabric known for combining breathability, stretch, abrasion resistance, and water and wind repellency in a single durable textile. Often finished with Schoeller's nanosphere DWR, it's used in climbing and mountain pants and jackets where freedom of movement, durability, and weather resistance all matter.
drirelease is a fabric technology that blends a small proportion of natural fiber (such as wool or cotton) with fast-drying synthetics, engineered so moisture is wicked and released to evaporate quickly. It aims to combine the comfort and feel of natural fibers with the fast-drying performance of synthetics, often with a built-in odor-control treatment, in base layers and active tees.
Hemp fabric is a natural textile made from the bast fibers of the hemp plant, valued for strength, durability, breathability, and sustainability — hemp grows fast with little water and few inputs. It's naturally resistant to mold and UV and softens with use, and is often blended with organic cotton or recycled fibers in casual and eco-focused outdoor apparel.
Waxed cotton is a traditional fabric made by impregnating tightly woven cotton with wax to make it water-resistant and wind-resistant while remaining durable and developing a characteristic patina. Heritage and rugged-style outdoor wear use it for its classic look, toughness, and re-waxable longevity, though it's heavier, less breathable, and not as waterproof as modern membranes.