Start every morning with a delicious fresh cup of coffee thanks to this handy Jay Hill Tamper Mat Silicone Black! The mat is made of silicone and is black in color. To press the coffee into the pistons, this is the container where the coffee sits, it is best to put pressure through this mat. This will not damage your kitchen worktop or countertop. The diameter of the tamper holder is 6 cm. This mat falls perfectly on any corner of countertop or top.