Oulii 2pcs Delicate Floral Pattern Round Shaped Non-Slip Soft Felt Coasters Cup Insulation Mats Pads (Black) 2 pieces of the non-slip felt coasters cup mats in one set will be sold together. Color: black. Material: durable soft felt. Size: Diameter: about 10cm; Thickness: about 5.0mm. Good size to suit most cups mugs. Never have to worry about risking a spill if your cup is not centered. Non-slip soft felt coaster cup insulation mat, designed to absorb any moisture and protect your table, never leaving any mark or stain on your desk or table. Also act as a wonderful decoration for your home, kitchen or office.