Juvale Bike Fender - 2-Pair Adjustable Bicycle Rear and Front Mud Guard, Bike Tire Accessories for Road Mountain Bike, Cycling, Yellow and Red, 16 x 3.3 x 1.8 Inches and 12 x 2.8 x 1.8 Inches;

When you are riding your bike, you may get muddy if you are riding on a mountain bike trail or on a rainy day with lots of puddles. If you put mudguards like this on your bike you can avoid getting dirty and wet. They shield you from splashing. These are bright red and yellow for extra visibility, and easy to install and remove. The larger one is 16 x 3 x 1.8 inches and the smaller one is 12 x 2.8 x 1.8 inches.