It Fits FOUR 6" kc lights. 99 inserts from CVS pharmacy. Very good feature! Very nice product. I am confident that the crocs will continue to hold their shape. To use this device you load your item, seal the zip around and put the zip pull onto the magnetic safety lock, and then press the side tag which will flash blue while the magic is happening within the sealed pouch. and went down over two inches in my waist. Best of all it can be used wireless or wired. if the screen was sharper I would give it a complete five out of five but because of the screen Im knocking it down half a point so 4. (Design issue, NOT a seller issue.