Mock Turtleneck refers to a type of knit pullover finished at the neckline with a short, fitted knit band that does not fold over. Mock Turtleneck which is an abbreviated version of the Turtleneck tend to offer a sleeker, dressier alternative for wintertime style.
Mock Turtleneck also refers to a small version of a turtleneck, having an upward-protruding neckline that does not fold over.