YellowIbis.com: The best science t-shirts, chemistry t-shirts, nerd t-shirts, and more. 

Size	S	M	L	XL	XXL
Measure A (inch)	27.5	28.7	29.5	31.1	32.0
Measure B (inch)	17.5	20.2	21.6	24.0	26.0

This relaxed fit cotton t-shirt for men has a seamless rib collar with double-needle cover-stitching, shoulder-to-shoulder taping, double-needle sleeve and bottom hem. The shirt is made from 100% pre-shrunk cotton and has a relatively light fabric weight of 5.3 oz. Light oxford is made from made from 99% cotton/1% polyester.

Flex print (plot print with a smooth finish)

• a slightly shiny surface and smooth to the touch
• extremely durable
• up to 3 different colors per design