N'Ice Caps Little Boys and Baby Sherpa Lined Fleece Winter Hat and Mitten Set Full soft sherpa lining in hat and mittens 4 cornered ski hat with tassles Adjustable hook and loop chin strap on hat Elastic on mitten wrist Infant size mittens up to 18 months do not have thumbs; larger size mittens have thumbs 1-3 months 3-6 months 6-18 months 2-3 years 4-7 years Double the warmth Double the wind protection Naturally water resistant, and stays warm even if the outer layer gets a little wet Hook and loop chin strap is easy to apply and works well to keep the hat on when playing outside, or bundled up in a stroller A little bit of elastic at the wrist helps to keep these mittens from wiggling off