X-BIONIC Symbio Merino Pants combine ultrafine Merino wool with the 3D Bionic Sphere System® and ThermoSyphon® to regulate temperature and boost breathability for demanding winter sports. Key attributes: Gray | Grey | Merino wool | Temperature-regulating 3D Bionic Sphere System with ThermoSyphon technology | Enhanced breathability | Moisture-wicking | Seamless construction | Ergonomic waistband | Stretch fabric for unrestricted movement | Zoned body-mapping | Long base-layer leg design | Anatomical construction | Dimensions & fit: Medium compression fit | Long base-layer length | Composition & care: Merino wool | Machine wash cold, gentle cycle. Do not bleach. Do not tumble dry. Do not iron.