These 4x4 coasters are for the science geek in your life! The trendy black and white print featuring the iconic E=mc2 equation and science graphics brings a touch of STEM style to your bar. Show trendy designs showing off your love of physics. The strong wooden base and heat resistant surface are great for hot and cold beverages. Sleek yet nerdy-chic, it's a must for modern STEM-lover's home.