Men's Funny Birthday T Shirt Square Root Custom Birthday Shirt 40th Bi

Men's Funny Birthday T Shirt Square Root Custom Birthday Shirt 40th Birthday 50th Birthday 30th Birthday Geek Birthday Shirt

This custom birthday shirt will get people thinking! Perfect for geeks, scientists, mathematicians, and so much more, this funny birthday t shirt will give your age, IF they can calculate the square root that is! This birthday t shirt also features mathematical formulas. Made of soft ring spun cotton and includes a cotton muslin drawstring gift bag.

Direct to garment printed using the latest technology. Soft, ring spun cotton.

Men's/Unisex Sizing:

This shirt is made from super soft ring spun cotton.
Tear Away Tag
Vintage colors are a poly/cotton blend.
Pre-shrunk, but expect slight shrinking after 4-5 washes and dries on high heat.

Small: 28 Inches Long By 18 Inches Wide
Medium: 29 Inches Long By 20 Inches Wide
Large: 30 Inches Long By 22 Inches Wide
X-Large: 31 Inches Long By 24 Inches Wide
2XL: 32 Inches Long By 26 Inches Wide
3XL: 33 Inches Long By 28 Inches Wide

Unisex Size Chart

Our unisex tee is super soft combed ring spun cotton. It is preshrunk, but expect this to shrink after 4-5 washes and dries on high heat. 

Women's Size Chart

Our 4.3 oz. standard women's t-shirt runs a little small. This is a very fitted tee that some women may find too snug. Please check sizing below.

Raglan Size Chart

Our 5.1 oz. Raglan baseball style tee is super soft ringspun cotton. This tee features a scalloped hemline and contrasting sleeve.

Hoodie Size Chart

Our lightweight hoodie is perfect for any season. It features metal grommets and 7.8 oz fleece blend.