L.L.BEAN called this vintage 90s sleeveless sweater the TRAVELER and it certainly suits any occasion.  It is a size Men's  XL reg. , done in 100% Merino Wool in a solid dark gray color with a black stripe at the V.Neck.

It measures:

52" in the chest
42" around the hem
28" long from the top of the collar in back to hem. 

Plenty of stretch in the knit and it bounces right back like a great knit should.  Elegant, versatile sleeveless sweater which will be a joy to wear.