This BoomCase is one of the few BoomCases we have made with a built in port to enhance the low end bass.. It has been used by our team for the past year as a demo and event BoomCase. It has some various stickers on the back plus a shoulder strap and a bottle opener on the side. We are offering up this BoomCase as a summer special. The opportunity to own a very unique BoomCase at a great price. Note - We can remove stickers if you desire.