This is a replacement for the Croc heel strap buttons. Comes with two pieces a male and female piece. This worked great for my men's size 10 crocs and I hope it works well for you too. Just print both parts. Put the female piece on the outside of the shoe and the male piece on the inside. Press both pieces together forcefully and your strap should be secure. Now you can choose between sport mode and comfort. Please like and share if you thought this part was useful.