Purchase the Santa's Bags 7-12ft. Artificial Christmas Tree Storage Bag with Wheels at Michaels.com. The artificial Christmas tree storage bag with wheels is the perfect storage for Christmas trees up to 12 ft. tall. The compression straps secure the tree to the bag's frame, so the Christmas tree container can be stored either vertically or horizontally. The U-shaped opening gives you easy access to the xmas tree storage bags contents.