Well selected double-deck PU leather for better heat insulation and durable use. Each side is leather and sewn together by white thread which looks really nice, fashionable and luxury.They are made of eco-friendly, no smell, lightweight, durable, non slip, water resistant leather which can be simply washed under running water, then wipe it with a dry colth, and re-use immediately.The coaster set suitable for all cups, glass and mugs, can be used for both hot and cold drinks as spoon rest, barware set, wine, beer and other beverages.The coaster are without the tray.Your custom logo could be done by emboss or imprint.