JBL VRX918S-STR Rolling Sub Transporter Bag For VRX918SThe JBL VRX918S STR Rolling Padded Sub Transporter (Black) is speaker cover designed to fit over a JBL VRX918S subwoofer. The cover is made from 1200 denier nylon with a waterproof backing, a soft Tricot interior and 10mm padding for complete protection. There is a Speaker Shield that is a rigid polyethylene sheet sewn into the front panel which protects the grille and speaker. It includes a provision for fastening VRX Line Array Cabinets to create a