STM-222-194J-01 Dux Shell (surface Go/go 2), Black, Polycarbonate, thermoplastic polyurethane (TPU), Stand function, Flip cover, Drop-proof, water-resistant, Designed For Microsoft Surface Go. This sleek and rugged case has been designed to complement the Type Cover and Surface Pen while protecting your Microsoft Surface Go or Surface Go 2. Our unique, transparent back panel allows the pristine beauty of your device to shine through.