SET 0F 2 100% NATURALLY SLATE - Made of 100% All Natural Slate Stone, which are handmade with unprocessed rocks. the original stone textures look perfect, fashion and recyclable sturdy base design. PERFECT GIFTS - The slate coasters bulk are durable, stylish, and flat, fitting any color of tables. A great housewarming gift, valentines day gifts. PROTECT TABLE SAFE - The square slate coasters with have non-slip round mini soft mat protects stability, counters and tabletops from stains and heat, offer a sturdy base, can make your home decoration full of personality. 🥃EASY TO CLEAN - Easy to maintain and clean with a simple damp cloth, does not stick to glasses/mugs with condensation. The slate are durable, has increased longevity and it does not need as much maintenance as other stone coasters.