I hate the feeling of being choked when I wear a turtleneck. I like the “Mock turtleneck” style better. It keeps my neck warm without all of the extra material.
I am in the process of converting one of my husband’s turtlenecks.
1. Machine zigzag on the top edge.
2. Pull the two pieces of material apart.
3. Carefully cut the inside material between the zigzag and the seam.
4. Pull the zigzag edge down to seam and pin.
6. Wash garment.
This also works well on a turtleneck with a worn collar because you cut the worn layer out.