This vintage men’s twin set was made in the 1940s by “Flosmore”. It’s an unusual material, with a knitted texture on one side and a fleece texture on the other. The original tag on an identical sweater I recently sold stated that it is made with a 100% wool pile and a 100% cotton back, treated to give it a fur like finish. The hang tag on this one is for the Dupont Zelan finish. The box is stamped that the set is a size Medium. (The stamp is above the XL printed on the box, which is some kind of stock indicator, not the size). It also comes with the original guarantee ticket. The set consists of a matching pullover sweatervest and five-button front cardigan. They are both in excellent condition and have never been worn. I would say the set would best fit someone in the size 38-40 range.

Vest
Chest (pit to pit, unstretched): 18″
Chest (pit to pit, stretched) : 22″
Length: 20″

Cardigan
Chest (pit to pit, unstretched): 21″
Chest (pit to pit, stretched): 25″
Shoulder to Shoulder: 18″
Shoulder to Cuff: 23″