Delux Barwell tamper mat fits over the edge of your counter. Not only does it have a secure stand for your tamper, but it has an indented portafilter holder, against which you'll brace the portafilter when ready to tamp. This is a 2-in-1 mat that gives you efficient use of your space. It's a handsome addition to any barista station!
The Barwell mat is extra thick and extra firm. It's fully 3/8" thick, unlike most mats that are only 1/4". And the round indent that holds the tamper has little "buds" on its surface that allow you to remove some of the residue from your tamper by rotating it.
You can also see (in the upper left corner of the picture) that there's a nail-hole in the mat, so that you can secure it to your counter if you'd like to do so.