PrimaLoft is a brand of high-performance synthetic insulation made of fine microfibers engineered to mimic the warmth, softness, and packability of down — while retaining insulation when wet and drying quickly. Originally developed for the US military, it's widely used in insulated jackets, gloves, and sleeping bags, and comes in several grades trading warmth, weight, and water resistance.
Hydrophobic down is natural down that has been treated with a durable water-repellent (DWR) coating at the plume level, helping it resist absorbing moisture, retain its insulating loft longer when damp, and dry faster than untreated down. The treatment addresses down's main weakness — losing warmth when wet — making it more forgiving in humid or damp conditions. However, it's only water-resistant, not waterproof, and doesn't make down perform like synthetic insulation when truly soaked.
Duck down is the soft, fluffy under-plumage of ducks, used as a natural insulation in outdoor gear that offers an excellent warmth-to-weight ratio and compressibility very similar to goose down — typically at a lower cost. More abundant than goose down, duck down performs comparably at equivalent fill powers, making it a popular, value-oriented choice for jackets, sleeping bags, and quilts. Like all down, it loses warmth when wet and costs more than synthetic insulation.
Goose down is the soft, fluffy plumage from beneath the feathers of geese, used as a premium natural insulation in jackets, sleeping bags, and quilts. Prized for its exceptional warmth-to-weight ratio and compressibility, goose down often reaches the highest fill powers available, trapping lots of warm air for very little weight. It's generally considered a premium insulation — often (though not always) higher-loft than duck down — but it loses warmth when wet and costs more than synthetic insulation.
Synthetic insulation is man-made insulating material — typically polyester fibers — used in jackets, sleeping bags, and gloves as an alternative to natural down. It mimics down by trapping warm air, but its defining advantage is that it retains much of its warmth when wet and dries quickly. Synthetic insulation is cheaper, hypoallergenic, and more forgiving in damp conditions than down, though it's heavier, bulkier, and shorter-lived for the same warmth.
Down insulation is the soft, fluffy plumage found beneath the outer feathers of ducks and geese, used to fill jackets, sleeping bags, and quilts. It provides the best warmth-to-weight ratio and packability of any insulation by lofting into a thick layer of trapped, warm air. Its rated by fill power (loft quality), it lasts a long time if cared for, but it loses insulating ability when wet and costs more than synthetic.
Schoeller-Dryskin is a premium softshell fabric from the Swiss textile maker Schoeller, known for combining durability, abrasion resistance, four-way stretch, breathability, and water and wind resistance in one woven fabric. Often treated with a durable water repellent, it's used in high-quality softshell pants and jackets for climbing, mountaineering, and ski touring, where a tough, flexible, breathable fabric that resists weather without a separate membrane is wanted.
Drirelease is a performance fabric technology that blends a small amount of natural fiber (such as cotton or wool) with synthetic fibers to create a material that wicks moisture, dries quickly, and resists odor, while feeling soft and natural next to the skin. Often incorporating a built-in anti-odor treatment, Drirelease is used in active base layers and shirts, aiming to combine the comfort of natural fibers with the fast-drying performance of synthetics.
Hemp fabric is a natural textile made from the fibers of the hemp plant, valued for its durability, breathability, moisture management, and strong environmental credentials. Hemp grows quickly with little water, pesticide, or fertilizer, making it one of the more sustainable natural fibers. In outdoor and casual apparel it's often blended with cotton or other fibers for softness, offering a hard-wearing, breathable, eco-friendly option.
Waxed cotton is cotton fabric impregnated with wax to make it water-resistant and windproof, a traditional material long used in outdoor and country jackets. Valued for its durability, rugged classic aesthetic, and field-repairable, re-waxable nature, waxed cotton is heavier, less breathable, and only water-resistant (not fully waterproof) compared to modern membranes — making it more a heritage and lifestyle choice than a technical performance fabric.
