Versatile and flattering
This is a very nice turtleneck. the variations in the ribbing are a modern (and flattering) touch. in some of the photos online it almost looked to me like there are color variations - fyi there are not. all the ribbing areas are the same shade of black.
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unless you are very small framed, i would recommend sizing up; or, if you typically wear a m or a l, go with the l. as reference i have wide shoulders (wider than my hips), large biceps, and a 34b chest, and i went with the l because