Sidas Comfort + Merino insoles offer a unique blend of comfort and functionality for cross-country skiing enthusiasts. These insoles feature a hybrid top cover combining synthetic fibers for durability and merino wool for effective odor control and temperature regulation. Hybrid top cover with synthetic fibers ensures durability Merino wool reduces odors and regulates temperature Transflux material provides flexibility and comfort Transflux C reinforcement offers foot support and stability Designed for Nordic skiing