Boden navy knit sleeveless shell top with keyhole

Comfy knit sleeveless top. Round neckline, with buttoned keyhole in the back. In good used condition. See photos for fabric and care details. Knit allows for stretch. Approximate measurements from flat lay: chest: 19" length: 23.5" Please note that the red visible in the first photo is only on the inside of the shirt - when worn, this would look like a completely solid navy top.