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Design, Invent, Print!

40th Birthday, 1977 Birthday, Square Root 1600, 40th Birthday Gift, 40th Birthday Idea, Happy Birthday, 40th Birthday Present, 40 year old


The perfect mug to celebrate a 40th birthday - with Mainly Mugs’ exclusive Square Root Of 1600 design!

This 40th birthday mug makes the perfect gift for a man or a woman, either as a treasured keepsake, or for day to day use.

Mainly Mugs is proud to offer our unique and exclusive, 40th Birthday, vintage bourbon design on our quality 10oz, white ceramic mug.

This makes a great 40th birthday present for those born in 1977.

LEFT, RIGHT OR DOUBLE SIDED? If choosing a single side print, unless you specify left handed within the drop down menu, your mug will be printed for a right handed person so that the design points away when drinking.


Capacity: 10 ounces
Care: dishwasher and microwave safe
Print: The designs are printed on the mug and will last a very long time

NOTE: we can print this design on any of the products within our stores, please contact us with your requirements:

Mainly Mugs, by Design, Invent, Print!
100% original designs ... often imitated but never equalled!

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