This is a repair and temporary fix kit for broken zippers. Includes 2 each of S/M/L sizes, for a total of 6 pieces. 【How to Use】 1: Insert a flathead screwdriver or similar tool into the gap of the slider and pry it open as shown in images 6 and 7. 2: With the slider open, insert the left and right sides of the zipper into the left and right sides of the slider. 3: Once the zipper is securely inserted, pinch the top and bottom of the slider with your fingers to close it. When prying open the slider, it may require considerable force if you try to do it with your hands alone. Using a flathead screwdriver or similar tool will make it easier to pry open. 【Caution】 This product does not work with all zippers. It may not be compatible with your specific zipper. When we tested this product, it did not work on thin zippers found on pouches, etc. However, it worked on relatively larger zippers found on bags (image 4) and zippers on zip-up hoodies. In some cases, it became usable after changing the size or direction of the zipper slider, or after reattaching it several times. However, we are unable to determine which zippers this product will or will not work with. Please note that we do not accept returns or refunds if the product does not work with your zipper. ----- If you prefer an anonymous and trackable shipping method, you can change the shipping method for the following additional fees: ・ Yu-packet Post mini shipping: +100 yen ・ Yu-packet Post shipping: +130 yen ・ Takkyubin Compact shipping: +450 yen ・ Takkyubin shipping: +700 yen If you wish to change the shipping method, please comment before purchasing. ----- ◆◆◆ We will discount the difference in shipping costs for combined shipping. (Estimate: -90 yen for adding 1 item, -180 yen for adding 2 items) ◆◆◆ If you have any other questions, please feel free to ask.