Vintage Blue Tank Top Shirt

Here is a super cool vintage tank from 70s or 80s. It's 60% cotton and 40% polyester. Wonderful color to this fabric. Mirroring scoops on the front and back. It's light weight, fairly sheer, super soft and comfy. It's in excellent condition with tons of life left. The tag says Medium, but here are the measurements taken laying flat. (refer to the last pic above to see how I measure shirts)

Chest (armpit to armpit) 17"
Armhole 7"
Length 20"