Model No.: X8310; internal dimensions of the case: 36.3x28.4x2.8 cm (14.3x11.18x1.1 inch) Compatibility: designed to perfectly fit for 16 inch Acer Predator Helios Neo 16; 16 inch Acer Predator Helios 16 Gaming Laptop; 15.6 inch Acer Predator Helios 3D 15 Spatiallabs Edition Gaming Laptop Anti-Shock: EVA hard sleeve and features internal upgraded shock resistant padding layer, protect your laptop from inadvertent collision and accidental scratches when put in backpack or suitcase Waterproof: the smatree sleeve is made of durable 1600d nylon, it obstructs water effectively. Don't worry about splashing water, washable when laptop sleeve case becomes dirty Customized for Acer Laptops: smatree has more than 20 sizes of hard EVA protective sleeve case customized for Acer laptops. If you're not sure which model of case is fit for your laptop, please feel free to contact our customer service