MathemaPigeon Pins

If there are more pigeons than there are pins, then at least one pin must have at least two pigeons. Show off this classic principle of mathematics on your clothing or accessories with these adorable MathemaPigeon pin buttons. The set contains 5 pins - just enough for Euclid, Fermat, Euler, and Gauss - and for the Bernoullis (Johann, Jacob, and Daniel) to squeeze in too. 

• They come in a set of 5 
• Made of tinplate
• Scratch and UV-resistant mylar coating
• Glossy finish
• Easy to put on