At this price point, and considering they are made by a reputable brand (Sennheiser), I am shocked that they didn?t include this feature. I got a ACTV500TWS and very happy about it. I panicked when i saw the pairing code but i just entered "0000" and it worked. They won?t exactly go flush to the gunnels. The company has a product page that shows these, but no actual support. Easy to install it, can check on youtube for installation video. I ordered my actual size and they fit slightly snug but after wearing them for a week or so they seem to fit just right. I assumed I was getting my usual stuff that I order every couple months. Im going to buy more for my closet. They will also require a little getting used to when walking about.