Developed with the fastest riders on the planet in the form of Madison Saracen the Alpine sock is suitable for all types of MTB jaunts The Primaloft performance yarn is both soft & hardwearing ensuring it remains in tact & comfortable through the entire World Cup season & beyond The fast drying yarn dries 20% faster than merino Suitable for riding in both warm & cool weather Features a Terry fabric insert in the toe & heel for added warmth & comfort Ribbed arch support gives a great fit The extra long 7.5 inch cuff gives plenty of coverage up the leg Made in Italy Limited lifetime warranty