I buy all the kits home and away all in the same size. It is fair to say they ALL fit differently. The home shirt this season and green kit seem a much tighter, slimmer fit. Last seasons home and the new black one are a little looser.
Although I think the kits are ok, they are hardly exciting are they? Very jealous of the likes of the Arsenal Adidias kits for example for this season. The sooner we get out of this Nike borefest the better IMHO.
I think the distorting bit may mean we have something similar in the stripes to the Atleti kit from last season
https://www.google.com/search?q=atletico+madrid+kits&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi4i_n437viAhX-SxUIHYwbDkkQ_AUIDigB&biw=1424&bih=761#imgrc=ff-8swzstzp7mM: