Slate Stone Coasters Set of 6 Square coasters 6-pack, large size, thick enough to seal the coldness of icy drinks Coaster Back has a protective cork backing as a non scratch layer. It is gentle to all surface types Protect tables from moisture and scratches while maintain your style with other decor Go to www.amazon.com/shops/coasters for the biggest selection of Prime products Lightning Prime Deal - Purchase 2 Sets TO have 3% OFF, 4 Sets 5% OFF, 6 Sets 7% OFF, 8 Sets 9% OFF, 10 Sets or more 10% OFF with the same coupon code DULCESLT - 100% Satisfaction Guarantee.