Materials: 80% Wool (Merino), 20% Polyamide. Our Men's Thermal Trousers are crafted from an merino wool blend with flat seams and no tags to prevent irritations. Featuring temperature control and moisture-wicking properties, these merino tights help prevent odors and keep you fresh and dry. They are available with or without a fly. The tailored fit enhances freedom of movement and provides superior comfort. These thermal trousers are perfect for layering or as a single layer in mild conditions. Ideal for hiking, skiing, or cozy comfort at home. OEKO-TEX Standard 100 certified and free from harmful substances, our Merino wool is sourced in an animal-friendly manner without mulesing. Washing Instructions: Water temperature should not exceed 86°F. Wash with similar colors using a wool detergent. Do not bleach, dry clean, or use fabric softener.