Folding For Science Rubber Square Coaster (4 pack) $13.24 Folding, via folding at home, for science is the very best thing many of us can do. This design is not endorsed or affiliated, however. Product Details This 3.5" x 3.5" square rubber coaster is made of a durable heat-resistant polyester fabric top, backed with a neoprene rubber non-slip backing, keeps things from sliding. The rubber coaster is 1/8" thick. It will not discolor or fade, machine washable.

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