The dux is a sleek and rugged case designed to work with the Surface Pen while protecting your new Microsoft Surface Laptop. Unique, transparent back panel allows your pristine device to shine through. Slim and lightweight, yet super protective. Specifications Colour: Transparent Length of Guarantee: 3 years Dimensions: ?33.7 x 25.6 x 2.6 cm Weight: 550g Brand: STM Custom fit for either fabric or metal keyboard Textured rubber feet prevent your laptop from sliding on smooth surfaces Ergonomic and form fitting design for a comfortable carry Tether point allows Surface Pen to be attached to the case for additional security Simple installation with TPU clip-on design Open hinge allows your Surface Laptop to breathe and cool itself freely 13.5" size is backward compatible to Surface Laptop 2