Almost every Cristiano Ronaldo fan might have noticed some white socks above or under the usual stockings, regardless of the team he is playing for while performing on the pitch.
As it turns out, it is a medical tape that is used by plenty of footballers with the main aim to keep the shinguards in place.
Moreover, the medical tape is typically white and sticky on one side, although the stickiness comes off after some time, especially if it’s wet.
Also, the upside of such a tape is that it is ‘breathable’, allowing air to reach the skin. That’s arguably the main reason why it is not the cheapest tape and is used primarily by top footballers, including Cristiano Ronaldo