Two-piece set of 110-size undershirts using HEATTECH technology, one white and one black. - Brand: UNIQLO - Model Name: HEATTECH - Size: 110 - Color: White, U-neck - Color: Black, Turtleneck Thank you for viewing. The white (110) is a U-neck with 9/10 sleeves. The black (110) is a turtleneck. I bought these for my child but forgot about them and realized they were too small after they outgrew them, so they are unopened. The outer bags have some storage wrinkles, but they are new.