Large measures approximately 18" pit to pit and approx. 24" from top of shoulder to bottom of jacket.  Sleeves (measured from center of neck, out to shoulder and down to cuff) measures approx. 31".

XL measures approx. 19 1/2" pit to pit, approx. 25" from top of shoulder to bottom of jacket, and sleeves measure approx. 33" (from center of neck, out to shoulder and down to cuff.