15PCS Slate Drink Coasters, 4 Inch Black Coasters Stone Coaster Set Square Laser Engraving Blanks with Anti Scratch Bottom for Home Office Kitchen

NATURAL MATERIAL:The black square slate coasters are made of high-quality slate,and has a protective layer to maintain its natural color and texture,sturdy and durable. TABLETOP PROTECTION: These Slate Drink Coasters have high temperature resistance, which can prevent hot and cold drinks.So they can be used to protect the table from water rings or burns. Also prevent condensation from leaving any stains or water marks on your countertop, bar, or tabletop surface. EASY TO CLEAN: These Slate Drink Coasters bulk have a black finish, which prevents leaving imprints and makes it easier to clean.The slate coaster is easy to clean. DIY CRAFT:These Slate Drink Coasters are also painted with chalk diy to create unique coasters. The pattern can be erased, and can be changed at any time according to your mood. WIDE APPLICATIONS: The Slate Drink Coasters are ideal for hot and cold beverages, cups, mugs, glasses, goblets, photo props, and so on.It is perfect for use in the bar etc.