Take advantage of the 2017 Boxing Day sales, deals, flyers and more at JYSK. Find exclusive deals across the entire store from mattresses, furniture and bedding sets. At RedFlagDeals we work hard to get you the best deals all in one place. Check out our Boxing Day flyers and find great deals on all your household needs. JYSK is a great place to start your shopping as they strive to bring you the best products at competitive rates.