EXPECTED FIT NB: Newborn to 6 months XS: Approx. 0–2 Years S: Approx. 3–12 Years M: Adult Please note: The hats are very stretchy, so the age ranges above are approximate and designed to accommodate a wide range of head sizes. Bring a little extra Christmas magic to the whole family! Our festive Santa Hat is the perfect finishing touch for holiday photos, Christmas morning, matching pajamas, and all your favorite seasonal traditions. Made from a super stretchy knit for a comfortable, flexible fit, with sizes for everyone from newborns to adults. Grab one for each member of the family and get ready for the cutest matching holiday moment! 100% Acrylic