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Original geek tees for coders, science fans & math minds
Designed for those who get the joke

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Size Charts

Find your perfect fit. Measure twice, order once.

How to Measure — T-Shirts

T-shirt measurement guide
  • Length: Place the end of a measuring tape beside the collar at the top (Highest Point Shoulder). Pull the tape to the bottom hem.
  • Chest: Measure around the fullest part of your chest, keeping the tape horizontal.
  • Sleeve: Measure from the center back of the collar, along the top seam to the sleeve hem.

Unisex Regular Crewneck T-Shirt

SizeLength (in)Chest (in)Sleeve (in)
S2834 – 3715 ⅝
M2938 – 4117
L3042 – 4518 ½
XL3146 – 4920
2XL3250 – 5321 ½
3XL3354 – 5722 ¾
4XL3458 – 6124
5XL3562 – 6525 ⅜

Product measurements are in inches and may vary by up to 2" (5 cm).

SizeLength (cm)Chest (cm)Sleeve (cm)
S7186 – 9440
M7497 – 10443
L76107 – 11447
XL79117 – 12551
2XL81127 – 13555
3XL84137 – 14558
4XL86147 – 15561
5XL89158 – 16565

Product measurements are in centimeters and may vary by up to 5 cm (2").