Feature: 1.Portable laptop keyboard foldable,slim and compact, can be folded very small to put in a backpack, great for travel. 2.Soft silicone rubber brings quiet typing experience. 3.Perfect for school, library, evening work or any silent environment without disturbing others 4.Waterproof & dustproof design, easy to clean and wash. Specification: 1.Name: 85 key waterproof and dustproof foldable silicone soft keyboard 2.Size: 13.58*5.15*0.51in/345*131*13mm 3.Net weight: 123g 4.Gross weight: 157g 5.Line length: 138cm 6.Material: Silicone 7.Keyboard interface: pluggable USB+PS2 conversion interface 8.Button force: 80±10g 9.Number of keys: 85 keys 10.Applicable models: desktop computers, notebooks Package included: 1 * foldable silicone keyboard