Pierre Cardin Men's 4XL Argyle V Neck Navy Jumper Knitwear Brand New With Tags.

Although it's 4XL it's more of a slim fit as per the sizing below:

Measurements whilst item is laid flat:

Pit to pit is approx = 24 inches

Full length is approx = 31 inches

Pit to cuff is approx = 21.5 inches

Shoulder to cuff is approx = 29 inches