Natural alabaster is ethereal yet strong, with a cool white glow which brings calmness and energy into your home while keeping your drinks chilled and your tabletops ring free! These sleek, organic coasters beautify your table, and each one is slightly unique. Set of 4 coasters Free form Measures approximately 3.5" x 4" and .43" thick With rubber bumpers to protect table surfaces Hand wash only Care Instructions: Hand wash only