So... the sizing is kinda hard... my Mr. Sawyer (a Sheltie) measures 24" in his chest... I forget his length right now but I think it was 22. The size 2x was kinda tight on him (and on Shelties too tight makes their fur look silly) and the 3x is a little big on him... haha!
However the Tee itself is freaking adorable and super-well made and like how the image seems to scale with the size of the Tee since I've gotten a couple other designs in smaller sizes for the Sheltie girls. The fabric is so soft and everything is sewn really well.
One other note -- that Teddy's design team might like to look into :) -- it would be nice to have a "boy dog cut"... :) the length of the shirt on the bottom gets in the way of, well, when he's gotta wee-wee. So I can't leave it on him when he goes outside without having to wash it. :)
But it looks adorable on him and I love the gray with Mr. Sawyer's black coat.