These Castelli Endurance 15 socks offer outstanding performance. They feature a 200 - needle construction that provides extra stretch, adapting well to your foot movements. Bioceramic yarns are used to ensure all - day comfort. Under - foot cushioning gives you a soft and supportive feel with every step. The heel and toe areas are reinforced for durability. A midfoot support band keeps your foot stable. These socks weigh 62gm.

How to use: Just put on these socks like you would with any other pair. They're great for all kinds of activities, whether you're running, walking, or working out. Note: Avoid wearing these socks with very tight shoes as it may reduce the comfort provided by the cushioning. Maintenance: Wash them in cold water and let them air dry. This will help keep the bioceramic yarns and the structure of the socks in good condition.