About the Design:

Handcrafted solid wood cufflinks created for that special person. A great personalized piece for any occasion. 

In physics, mass–energy equivalence is the relationship between mass and energy in a system's rest frame, where the two values differ only by a constant and the units of measurement. The principle is described by the physicist Albert Einstein's famous formula: E = mc^2.

Product specifications :

Size: 20 mm

Material: Solid Wood