These Merino thermal pants are like no other. Crafted with 100% luxurious Australian Merino, they are Woolmark Certified, Oeko-Tex 100 certified, and even Carbon Neutral! The soft jacquard band and interlock knit provide non itch comfort, while flatlock seams prevent chafing. So, stay warm, ultra-comfy, and smelling great - all day, every day!