derek lam 10 сrossby sleeveless pullover sweater M

Purchased at Beacons closet and never worn. Looks like new. Comes from smoke and pet free home. The sweater has no material tags or size tags. However by the feel of it it’s mix of natural and high end synthetics. I’m size 10-12, I’d say this is for sizes 6-8-10, which makes it a Medium.