A tanning of the skin appearing on the neck, arms and legs of an avid cyclist. Similar to a farmers tan with some distinguishing features, caused by wearing tight fitting clothing and other cycling accessories while out riding in the sun for extended periods of time.
Tan lines on the upper arm and wrist are caused by short sleeve jersey and gloves. The body hugging Lycra shorts of roadies and XC jey boys helps to give a distinguished tan line on the lower thigh. Helmet straps and sunglasses can cause white patches on the face and jaw.
Check out that dudes cycling tan, has he been in training for the tour?