DIY Cork Sheets:Made of natural soft wood,waterproof,non toxic and strong stickiness,Great to use for homemade coasters | Adhesive Cork Sheet:30 pack adhesive corks in total,Enough for daily use,easy to store and share with friends | Cork Backing:cork sheets have anti-slip surface and the back side of the cork tiles is designed with a self-adhesive sticker , It has the effect of heat insulation | Corking Sheets:The size is 4IN*4IN, It can easy cut to the size you need, Perfect for the Halloween DIY craft,You can write on the cork surface to create your unique pattern as a Christmas gifts | Perfect for Crafting:These are the perfect addition to craft closet. The adhesive backing is easy to peel and easy to write on to help make the perfect design before cutting