タートルネック

noun, noun which may take the genitive case particle 'no'

turtleneck; polo-neck sweater

Refers to a high, close-fitting collar that covers the neck, or a sweater with such a collar. Common in fashion contexts.

• 寒さむい日ひはタートルネックのセーターが暖あたたかい。

  On cold days, a turtleneck sweater is warm.

• 彼かの女じょは黒くろいタートルネックを着きていた。

  She was wearing a black turtleneck.