I have used cork coasters before and left them in Mexico when I moved to Corpus Christi. I finally found coasters made of cork at Overstock, even though they are thinner than the ones I used in Mexico, but they seem to work just fine with a paper napkin on top.
Love the look of these coasters and would rate them higher if it wasn't for the following: 1. My preference was to order the coasters with no lettering at all and that option is not provided. 2. They have a felt backing, as described, and as a tall cold drink can sweat to the edge of the coaster, I feel cork backing would have been a more practical (if not esthetic) choice. 3. As a previous reviewer mentioned, the glass sweat does leave dark ring stains on the slate. Haven't cleaned them yet, so can't talk to the permanence yet, but do I really want to be wiping down coasters on a regular basis?... No. Overall, I'm fairly satisfied with the purchase, as they do hold the glass sweat a bit better than my old round coasters that were slightly smaller and laminated. Giving people the option to just order the coasters clean without a letter seems like such a no-brainer to me... if they had that option, I probably would have ordered more.
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