When you're having them layer you want to be sure they're comfortable and unrestricted The Boulder Gear NorthStar 1/4 Zip Mid Layer does just that with a polyester-spandex blend and anti-pill fleece that moves with them for all day comfort and warmth The 1/4 zip design allows for easy temperature control with an ultra warm and soft feel that'll keep them comfortable Add in the flatlock stitching and stretch fit and you have a quality layering piece that'll make sure they have a blast in the snow.