Super thin, you can wear the airpods skin when in charging in the case without removing .<BR> Anti slip , enhance the grip not easy to slip when you are joging, running, walking, keep your airpods steadly ahesive .<BR> Installation: 1) Flip the Secure Fits inside out so that the glossy side is showing. 2) Line up the cutouts with your AirPods. 3) Flip the Secure Fits back to the original side and make sure cutouts are flush.<br> One package includes 3 pairs ,air tips is not including.<BR>