Draco Malfoy Vist To Hagrid's Sweater, Sorcerer's Stone
During their visit to Hagrid's hut, Harry, Ron, and Hermione are caught by Draco, who then tells Professor McGonagall of their late night activities. While Draco is punished as well, to his chagrin, the entire evening is spent in a knitted turtleneck sweater.
Draco's grey turtleneck sweater is similar to that worn by Oliver Wood while he teaches Harry the rules of Quidditch, but features a smaller rib pattern, and looks to use a thinner weight yarn. No pattern currently exists for this specific sweater, but a quick Ravelry search should yield enough similar sweaters to give you a choice.