To continue reading up to 10 premium articles, you must register , or sign up and take advantage of this exclusive offer: The Snuggie - the fluffy blanket with sleeves that is designed not to slip off no matter how aggressively you reach for the potato chips - received a big win recently.   A U.S. trade court ruled that the product, a break-away star of TV shopping that has appeared on "Late Night With Jimmy Fallon," "The Today Show" and "Oprah," should be classified as a blanket, rather than clothing, as government lawyers had been trying to claim.