This is the Gator GK-61. A part of their Lightweight Keyboard Cases Range. It is a Rigid EPS Foam Lightweight Case w/ Wheels for 61 Note Keyboards. Rugged Nylon Construction with Polyethylene Reinforced Interior Frame with Interior is Lined with Tricot & Soft Foam. Features include - Fully Adjustable Padded Straps to Secure Keyboard in Place During Transport, Large accessory compartments on outside for pedals and cables, Built-In Wheels with Tow Handle & Skid Bars, and .