Protekt Backpack Controller Bag for Pioneer DJ DDJ-FLX4, DDJ-400 The Protekt Backpack Controller Bag is a high-quality bag designed specifically for the Pioneer DDJ-FLX4 controller. It is a great option for DJs who need to transport their equipment safely and comfortablyOne of the key features of the Protekt Backpack is its durable construction. The bag is made from high-quality 1680D materials and features a reinforced frame that provides protection for your controller during transport. Additionally, the bag is water-resistant, which helps to keep your equipment dry in case of rain or spills. The backpack series are designed to hold a DJ controller, laptop and the front pocket provides additional space for cables, headphones, and other small accessories. They have a 10mm padding to provide ample protection for your gear. There are different configurations of straps and handles so you can carry your gear in the most convenient way: double padded shoulder straps to wear it as a backpack