Garmin Zumo 660 SunShade. This SunShade is designed to keep the glare off of your GPS on those bright sunny riding days. It is made of ABS plastic and is felt lined to absorb the glare from the sun. Our patented design is custom made for the Garmin 660 Zumo and attaches easily with velcro on the back side of the GPS. The top and sides extend 3 1/2 inches for great protection from the sunlight. ( Velcro is included in the price. ) Measurements for your Garmin GPS should be 5 3/8" x 3 1/4".