Most Helpful Positive Review Michael J. 9/26/2013 - 4:45 PM 5 out of 5 people found the following review helpful 4 out of 5 Mock Turtle Great turtleneck but they do run very big. Last year ordered an XL. Thought I could shrink it, no way! Still swam in it. Last week ordered a L, still a bit big after washing and drying. A medium for me may not fit as loose as I like. Very satisfied. Gave the XL to my son!