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

Size	S	M	L	XL	XXL
Measure A (inch)	24.5	25.2	26.0	27.0	28.5
Measure B (inch)	15.0	16.5	17.0	18.5	20.0

This slim-fit lightweight cotton jersey t-shirt is stylish and has a contoured fit is designed to flatter your figure. The reinforced shoulder construction maintains shape through repeated washings and the durable double-stitched bottom hem and stretchable cotton collar result in lasting comfort and durability. Extremely soft and smooth to touch. Made from 100% cotton (except for color code heather gray: 90% cotton, 10% polyester), the fabric weight is 4.3 oz.

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