I am a little leery of getting another Vitasea tank since my super comfy, beloved Mountain Tank did this after washing (the store took it back no questions asked - first time I ever had something damaged out):
not sewing on the bias correctly causes twisting after washing. People have seen this in the Flip Your Dog LS and Every Yogi Tees, too:
Thanks to Ms. B. for these photos.
I've talked to people with the Cadet striped Mountain Tank and Every Yogi tees and they haven't seen any twisting. From what I understand, lining up the stripes helps the shirts be sewn on the bias correctly.