Vintage Cosby jumper in good vintage condition and with plenty of wear left

This is a vintage item and may not be perfect but anything more than minor vintage would be stated above 

No material label but I would says its acrylic

No size label but looks like a medium but is only approximate so please check measurements below for size :-  

Pit to pit 22"

Top of shoulder to bottom 25"

Collar to end of cuff 26"

B14