All three collections were created to make purchasing bangles as easy or customizable as you could want. Keep It Simple allows you to choose which bangle you want and customize it to your size and wire color. In the collection Make It Yours, the shell in the photo is the exact shell you will receive on your bangle, so you can make sure it's exactly how you want it. The inventory in this collection will vary based off what I find while diving. And lastly, What you see, is what you get is a collection of pre-made bangles that is ready to ship. Scroll through them all or type a size ("size _") into the search bar to see what's available in your size.