Thick rubber tamping mat lip around the edge of the mat keep stray coffee from ending up over the counter top round indent for your tamper The Rhinowares Bench Tamping Mat is nice thick rubber tamping mat. Will give confident protection of your counter top as well as protecting your group handles and tamper. A lip around the edge of the mat keep stray coffee from ending up over the counter top and the straight leading edge allows the mat to sit flush with your counter top. The mat also feature a round indent for your tamper so its there when you need it. Dimenion are 21cm x 15 cm. Thickness is 5mm. Great tamping mat from Rhinowares that will last.