The Halti RYTMI M PANTS bring together the newest technologies and top-quality materials. The outer Stormwall® material is wind resistant and combined with modern nanotechnologies, Bamboo Charcoil inner surfaces for comfort during your activity. The Bamboo Charcoil is a revolutionary technology that provides lightness and softness without losing heat. The reflected infrared rays improve blood flow and keep your temperature stable. A naturally antibacterial material, it wicks moisture away and dries fast.