Men's Christmas Vacation Lighted 'Got a Knot Here Russ' Ugly Sweater (Red) Made with ultra-soft 85% acrylic 15% wool yarn. Contains integrated LED lights controlled by a remote hidden inside the sweater. Our Christmas sweaters are HIGH-QUALITY and will last for years  we dont make costume-grade holiday sweaters. All sweaters are brand-new and shipped within a protective Festified polybag. Fast shipping guaranteed  Amazon will fulfill your order within 1 business day when placed before 1PM PST. Officially licensed by Warner Bros. Studios and proudly made by Festified Holiday Clothing. Since 2009, Festified has been creating the best holiday sweaters, ugly Christmas sweaters, and funny Christmas sweaters for men, women, children and dogs. National Lampoons Christmas Vacation sweaters by Festified will make you a star at your ugly Christmas sweater party, tacky sweater competition, holiday bar crawl, or gift exchange on Christmas morning!