Check the listing for details. Wrist Watch Protective Cover w/ Vinyl Window. Condition: New with tags. Listed at 7.99 USD. Wrist Watch Protective Cover Wonder Guards spandex watch covers easily stretch and slide right over your entire watch with a clear protective window that allows you to see the watch face. Our Window Watch Guard offers protection from scratching, dirt and dust whether working outdoors, at the gym or any activity that could cause damage. Watch Guards are available in multiple sizes and colors. Watch Guard SizingCover Diameter: Small (1.91" - 2.23"), Medium (2.23" - 2.55"), Large (2.55" +)Band Width: 3" Measuring Your Wrist ProperlyStep 1: Take a piece of string and wrap it around your wrist and mark where the string intersects. Measure the distance between those two intersecting points on the string. This will give you the circumference of the area.Step 2: To figure out the diameter multiply the circumference you measured by 0.3183.Step 3: Take the diameter number your figured out and compare it to the dimensions above for the product sizing you need.