- Bird Family Outdoor Stretch Quick-Dry Pants: 88% Nylon + 12% Spandex High-Stretch Quick-Dry Fabric .Lightweight and smooth, fully elastic, breathable for long wear, quick-drying and non-sticky when sweating, wrinkle-resistant and low maintenance .Equipped with a built-in buckle adjustable waistband, no extra belt needed, fits various waist sizes .Water-resistant zippered side pockets for secure storage of small items .Streamlined straight-leg design, suitable for all leg types, perfect for commuting or outdoor activities .Matte breathable fabric, lightweight and non-bulky, versatile for hiking, camping, and everyday wear .Available in deep gray and pure black, understated and visually appealing .Machine wash in cold water at 30