|Superstar Nev Schulman approves!|
The Lav-Strap has 3 different options for mounting a mic on it. You can insert your COS-11 inside a tight pocket, use an RM-11, or another sort of mid-sized pocket for other mounts. It's made from a soft elastic material and comes in three different sizes. We started with the Large and ended up using the Medium for a better fit. It fastens using a bikini top type of fastener, and it usually ends of being on the person's side, not their back. It would be nice if was somewhat adjustable, but I think those components would add to the bulk.
All in all this is a well made product, just like the Lav-Bullet. I love it, the talent loves it, and the sound is great, so I'm sold.