Outdoor clothing fabrics are specialized performance materials designed specifically for outdoor activities such as mountaineering and hiking. They must meet performance requirements like ealstic, waterproofing, windproofing, breathability, and quick-drying properties, and material technology must ensure a balance between protection and comfort. Their key characteristics are moisture-wicking, breathability, elasticity, and durability. Synthetic fibers such as polyester, nylon, or blends of cotton and synthetic fibers are frequently used. While synthetic fibers may not be as breathable and absorbent as pure cotton, technological advancements can provide better perspiration management and increased abrasion resistance, while blended fabrics offer an optimal combination of comfort and functionality.