Forty different backpacks to choose from – all with a 5SOS theme. 5 Seconds of Summer is back! 5 Seconds of Summer Backpacks are ready for purchase in the Official 5 Seconds of Summer Shop. Backpacks come in a variety of colors and styles, including tote bags, messenger bags, and laptop bags. The most popular item is the Black Denim Backpack with Red Shoes. Shop for your favorite backpack now!