Medium under arm to under arm  28" (71cm) nape to bottom of back  is 25" (64cm)  Largeunder arm to under arm  32" (81cm) nape to bottom of back  is 25" (64cm)  Style - Puff Sleeved T-shirt Design - "Laura" by Steve O'Connell Material...

Medium under arm to under arm  28" (71cm) nape to bottom of back  is 25" (64cm)  Largeunder arm to under arm  32" (81cm) nape to bottom of back  is 25" (64cm)  Style - Puff Sleeved T-shirt Design - "Lilly" by Steve O'Connell Material...