Product details: This is a X-Style Universal Notebook & Laptop Keyboard Protector 3-pack, Size XL, designed to protect notebook and laptop keyboards in the 17 to 18 inch HD range. This Keyboard Protector is a highly flexible and transparent plastic film sheet, with two elastic bands that allow you to quickly and easily attach the Protector. This design allows for protection from crumbs, hair, dust, spills, and other debris, while typing remains unhindered and free. The semi-disposable design means the keyboard is designed for several months of intensive use and abuse, and it is easy to clean and sterilize for use in public workspaces. This 3 pack gives you spares so you can swap out the Keyboard Protectors for regular cleaning. Customer service support information (Toll-Free): 1-888-248-2019; Support Email: support@greenonionssupply.com; Contents: Three X-Style Universal Notebook & Laptop Keyboard Protectors, Size XL; Dimensions: 17 1/8" x 6 11/16” (435mmx170mm) Thickness: 0.025 mm (1 mil)