The STM Dux Shell for Surface Pro 9 is designed to be a protective accessory for the Microsoft Surface Laptop. It features a durable construction from polycarbonate and TPU materials and allows unobstructed access to all ports and buttons. It has completely transparent materials for the back panel that allow you to customize your device with personal images or scan a tagging barcode. Besides being an attractive addition to the laptop, it has survived a military-type drop test.