Wool is the most hydrophilic of all natural fibers, absorbing as much as 30% of its weight without feeling wet. Traditional Bierfilzl ("Beer Felt") is the highest quality German Merino wool felt coasters on the market today. Their clean and minimal execution offers an unexpected textural and refined modern heritage element to any home decor. Set includes 4 hand-cut heavy duty 5mm thick mixed color Merino wool felt coasters to provide extra surface protection. Includes 4 coasters in Turmeric, Dandelion, Dijon, and Feather. Merino wool is a wonderful sustainable textile, being grown year-round from the Merino wool sheep consuming a simple blend of water, air, sunshine, and grass. Every year Australian sheep produce new fleece, making wool a completely renewable fiber. Wool fibers naturally and quickly decompose in soil and, in effect, release valuable nutrients (like nitrogen, sulfur, and carbon) back into the earth and fertilize the soil. The average lifetime of wool items is more than 50% longer than cotton garments and are washed less often. Made in the USA. Measure 4 x 4 in.