These 100% wool felt round coasters protect surfaces and hold your beverages in style. The perfect blend of function and style, it's a go-to host gift and stocking stuffer. Because wool felt naturally absorbs moisture and heat, it's the perfect material for coasters. Each set is one color with 4 coasters included. Materials: 100% wool felt, 5mm thick Dimensions: each coaster is a 4" circle Care: Clean with a lint roller or if a spill should occur, spot clean with water and a mild detergent Hand-made in Portland, Oregon USA About our felt: We use the highest quality 100% wool designer felt available on the market today. It's a super-hero material: environmentally sustainable, colorfast, water-resistant, heat-resistant, non-fraying, biodegradable and compostable. Additionally, the majority of our products are upcycled from remnants. OEKO-TEX® Certified.