A raised rim design so that the condensation from cold drinks can collect in there instead of pooling and eventually spilling out onto your furniture. Stackable and easy to clean. cork are made of cork which is very sturdy, nice looking, thick enough. The perfect material for an absorbent and flexible mat under the bottom of your glassware. Very effective for iced drinks and freeze water, absorbed water or heat immediately and quickly. Use cork coasters as holder for coffee cups, wine glasses, mugs, drinks, beer bottles & pots. Along with protecting the table top surface and furniture, they also reduce noise from glasses and mugs. Accommodate many different sizes of glasses and cups. Great for an art project. Keep its blank cork material for DIY customization to suit your unique style. Colour:Wood color Material:Wood Size:Diameter: 10.3cm Package Contents: 16 x cork coasters Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.