Same pair, same size, came in the same box. You’d think part size would correspond with shoe size…like wouldn’t the air unit and window be the exact same size depending on the size of the shoe? I dunno but I’ve seen quite a few of these ‘mis-matched’ units. If I bought a limited pair of AM1s and received this, I’d probably just suck it up and deal with it. But a GR? Nah I’d return ‘em. How about you?