Fits Zipper Sizes: 5-7 Examples: Jackets, Sleeping Bags, Tents, Purses, Duffel Bags Includes: 1 Medium FixnZipslider 1 ring pull tab 1 black cord pull tab Start by checking the back of your broken zipper slider; most zippers have a size number (1-10) embossed on the back of the slider. Once you know your zipper size, our sizing chart below will determine which FixnZip is right for you. Small: Sizes 1-4 Examples: pants, skirts, fine garments, cushions, clutch handbags Medium: Sizes 5-7 Examples: jackets, sleeping bags, tents, purses, duffel bags Large: Sizes 8-10 Examples: wetsuits, boat covers, canvas tents, heavy duty clothing, jeep windows Measure Your Zipper If your zipper doesnt have a number on the back, you can simply measure the width of the zipper teeth in millimeters or inches. Teeth/Coil Width 1 to 4.5 mm | 0.04 to 0.18 in = Small 5 to 7.5 mm | 0.19 to 0.30 in = Medium 8 to 10 mm | 0.31 to 0.40 in = Large