E3 by Etcetera Mesh Semi-Sheer Side Zip Moto Style Jacket in Black. Lightweight, no lining but quality fabric. New but the tags were removed - the plastic protective covering is still on the zipper. Size 6.

Approx front measurements
Pit to pit - 19”
Arm length - 23.5”
Waist - 18”
Length - 21.5”