A skirt guard, dress guard or coat guard is a device fitted over the rear wheel of a bicycle to prevent a long skirt, coat or other trailing clothes or luggage catching in the wheel, or in the gap between the rim and the brakes.
Skirt guards are common on bicycles in continental Europe, where the bicycle is commonly ridden in smart-casual or formal clothing; but very uncommon in English speaking countries where many cyclists wear specialised cycling gear. It is often paired with a chain guard to keep the rider's clothing clean. They are often used on utility bicycles.
There are several forms, for instance:
Large, solid surfaces have the disadvantage of air resistance, which increases the risk of being blown sideways by gusty sidewinds. Air-permeable designs such as mesh and string provide a more stable ride, but can be more difficult to keep clean. A pair of small plastic sheets gives moderate air resistance and a smooth surface which is easier to keep clean.