materials:Our coasters are made from . Strong and , they are unbreakable, odourless and reusable. The edges are finished with a raw edge and hand crafted to add to the aesthetic. Anti-slip design:The black coaster has four non-slip feet on the bottom to prevent your furniture from being scratched. coaster provides you with good stability so that your cup doesn't wobble. DIY Coaster:Our coasters are available in your own DIY design. You can decorate the coasters by laser engraving, painting,drawing and more. coasters can be used as a coaster for your friends and family. The for weddings, birthdays, Valentine's Day, Christmas and Year. Easy to clean:These coaster sets are very easy to clean in everyday life, simply rinse the coasters with water and wipe clean with a clean rag. The perfect size:The inch fits most cups, glasses, mugs, goblets, whisky glasses, coffee cups, , plates and more. These black coasters help to keep your table free from grease, water and other stains. A convenient experience in your life. Colour:black Material:natural rock slab Size:10 x 10cm Package Contents: 12 x Stone coaster 1 x storage bracket Only the above package content, other products are not included. Note: Light reflection 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.