Levi’s Canada Boxing Day & Week 2020 Sale: Save 40% off Everything Sitewide + FREE Shipping Using Promo Code! Levi's Canada has a great Boxing Day & Week Sale available now, where you can Save 40% Off Everything Sitewide + FREE Shipping. To get these offers, enter the promo code BOX40 at checkout. This offer is valid until December 27, 2020. Click here to view this offer.