1. SOLID WOOD NATURAL MATERIALS: This coaster set is handcrafted with allnatural, organic materials. Made of pure Paulownia wood, each piece has its own unique look and design. The hardwood Paulownia makes these coasters durable and easy to clean. 2. RAISED EDGE CATCHES WATER CONDENSATION: Bowlshaped coasters protect your glass/wooden table from stains or water rings. Put an end to those pesky water rings and annoying moisture damage on your wooden furniture! 3. COASTERS WITH NONSLIP MATS: Each coaster set is equipped with exquisite wooden coasters and nonslip mats, which can add a perfect decoration to any table or desk. 20 antislip pads, this is a welldesigned feature to prevent sliding and protect the desktop. 4. PERFECT SIZE AND EASY CLEAN: Round 4.3' size accommodates most cups and drinking containers. Just clean them with a damp cloth and wipe with a clean dry cloth; due to the nature of pure natural wood, it is not recommended to use the dishwasher to clean.