Compatible with Microsoft Surface Book 3 15 inch and Surface Book 2 15 inch. Exterior uses PU leather for a simple, tidy appearance that highlights quality. Eco-friendly PU leather is durable and stylish. Heat dissipation and protection: the case features a semi-closed mouth frame design that helps dissipate heat and reduce heat buildup, helping to extend the life of the device. Keyboard bracket: a foldable bracket at the bottom of the keyboard raises typing height by about 3 cm for more comfortable typing. Multi-function: the case can be separated into two parts to protect both the keyboard and the tablet. User-friendly design: slim edge profile with an elastic ring to hold a pen; camera remains exposed for easy shooting; all interfaces and cooling holes are hollowed out to improve airflow. Use scenarios - Working at a desk or on the go: the keyboard raising bracket provides ergonomic typing comfort, while the two-part design protects both keyboard and tablet during transport. - Travel or storage: split the case to keep keyboard and tablet separately protected in luggage or bags. - In studio or on-site shoots: camera exposure and accessible ports allow quick connections and convenient photography or presentations.