Features: The surface of this mat can absorb water, and can be wiped or washed with water, so it will not become dirty due to water absorption. Suitable for birthday gifts, Thanksgiving gifts and Christmas gifts. Heat resistant, non-slip, multifunctional. Most importantly, because of this material, compared with other coaster materials, coasters will not stick or stick to your glass when wet. It is very suitable for use at home, offices, hotels, restaurants and bars. Package Includes: 1x Coaster Specifications: Material: Diatomaceous Earth + Clay + Cork Stickers Weight: 100g Size: About 10.310.30.8cm/4.05x4.05x0.31inch Type: 1/2/3/4/5/6/7/8/9/10 note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.