Keep your heads clean at all times with these easy to clean replaceable silicone foam heads. To replace the head simply remove your existing used foam head and replace with a new one. Is that easy. You can even use a different color for a different occasion or use. To clean simply wipe with mild soap and warm water. Other colors available on my store front. Comparable with 10 and 15 speeds massagers. For 20 and 30 speeds massagers different inner inserts are available. Just send me a note when checking out.