Balaclava is the best headwear when you do winter sports. 
It provides comfort and insulates your cheeks and neck from cold and wind.
Soft and stretchy, it is thick enough to wear instead of traditional hat yet thin enough to use with a ski helmet.  This product has adult and children version that is color-coded.  Orange one is youth (XS) size. 
Free shipping ( use coupon code:  winter_fs).