it has to have all the points covered in cardboard, then covered overall with sheet or blanket... also has to be wrapped inside with plastic. we cut little pieces of cardboard and taped them around the points of our moose, then bought a used sleeping bag at goodwill, unzipped it, wrapped it around the rack and taped the crap out of it with gorilla tape. when we were almost done checking in, the gal at the counter asked that it be wrapped with plastic too..... this almost cost me my flight, finally I found a janitor and got a giant garbage bag and cut/taped it around everything. she wasn't real happy with me all said and done, but I had followed all the website directions and damn near didn't get my flight because the gal at the counter wanted it wrapped in plastic and was throwing a huge fit. evidently, she said alaska air was recently sold or something and the only way they were allowed to continue shipping horns/skulls was if they had them wrapped for smell and bacteria for other customers. not sure how true, if we'd have known we needed to do the plastic as well it all would have been pretty easy, it was having to deal with all that at the airport and not having access to anything that really sucked.