Order by 11:59pm EST on December 18, 2017 for guaranteed delivery by Christmas. Christmas delivery guarantee valid for street addresses in the contiguous U.S only. Free Shipping offer is good for free standard shipping or priority shipping if shipping to a street address or a P.O. Box address in the contiguous U.S or a PO Box (but not a street address) in the following areas: U.S. Territories, Military addresses/APOs, AK, HI, PR and some rural areas. Not valid on any express or rush shipping service. Not valid on international orders or on previously purchased merchandise. Offer may be cancelled or modified at any time.