The Endura Baaba Merino Winter Socks combines the warmth and insulation of wool with the breathability of synthetic materials. The Merino blend is soft and warm to handle those cooler rides, yet still breathes okay for a winter sock. The long cuff will give you extra warmth and the padded sole will give you that extra bit of comfort. These socks perform as you would hope, warm and cozy without making your feet feel stuffy and uncomfortable.