STM Dux stm-222-194J-01 Carrying Case Microsoft Tablet - Black, Transparent - Drop Resistant - Thermoplastic Polyurethane (TPU) Body - 181 mm Height x 267 mm Width x 20 mm Depth - Retail Best-in-class protection The Dux is a sleek and rugged case designed to complement the Type Cover and Surface Pen while protecting your Microsoft Surface Go. Our unique, transparent back panel allows the pristine beauty of your device to shine through, and works great for asset tagging at schools or businesses. Slim and lightweight, yet super protective, the Dux has been tested to meet or exceed U.S. Department of Defense 810G drop tests standards.