UDG Ultimate Digi Headphone Bag Black. The DIGI headphone bag from UDG is a high-quality ballistic nylon headphone carrying bag designed to protect headphones, USB drives, SD cards, external hard drives, mobile phones, cables, business cards, credit cards and accessories in a padded carrying bag that includes a handle, a detachable and adjustable shoulder strap. The UDG DIGI headphone bag is the only bag a DJ needs to carry today's digital media with them.