I bought this to try out the windshirt concept - not sure if it actually is a "windshirt". Worked for me for a week on the JMT last year, and sold me on the windshirt idea.

Tag shows Land's End 14-16 (I assume women's sizing?)

Measures 25" from armpit to armpit, same all the way down to bottom hem. I'd guess it is similar to a men's medium?

Recently altered, so it doesn't look like photos. Took out tags, netting in hood, reflective things running down the arms, the pockets on the front, and the cord in the bottom, reducing weight from 6.5 oz to 5.15 oz (should have done this before using!!) Could probably get under 5 oz by removing/replacing cord in hood and/or replacing elastic in wrist bands.

If anyone is interested in having this, please post below. I'll pay for shipping.