Are memory foam or wrap-style travel pillows better for airplanes?

It depends on sleep position. Verified-purchase volume in this pool skews toward memory-foam U-shaped pillows (napfun, SAIREIDER), which suit upright back-sleepers, while wrap-and-scarf designs like the Trtl and chin-supporting BCOZZY are favored by people whose heads tend to fall forward or to the side. Because we found no independent lab testing in the supplied data, we'd suggest matching the style to how your head actually falls when you doze.