Castelli's Free 9 Sock is made from Meryl® Skinlife, and the 6cm mesh upper make it ideal for summer rides. Castelli's Rosso Corsa sock was the basis for the Free 6 Sock, but they’ve added a new mesh construction to the cuff to make it a bit cooler for summer. The graphics look great with any Castelli product. With this Meryl® Skinlife sock you will be able to exercise as much as you want and still remain fresh.
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