Thanks to their light cushioning for unbeatable power transmission and direct feedback, the RU5 Lightweight invisible mens running socks are ideal for competitive runners. Additional silicone fibres on the inside of these running socks prevent them from slipping, and an extra heel cushioning bar prevents friction and blisters. Mesh inserts in the instep also ensure that your feet stay pleasantly cool. The rapid moisture wicking and optimised shape of these socks ensure a comfortable, stress-free wear while competing.