Inkfish and Co. Affordable 100 pack blank off white color coasters (each approx 2mm thick and 80pt). Available in four different sizes: 3.5″ Rounds, 3.5″ Squares*, 4″ Rounds, and 4″ Squares. Processed of high quality heavyweight cardboard pulp board paper. Made in USA. Disposable, 40% recycled content, biodegradable, and eco-friendly.