coulor:gray white match black,gray white, material :ABS 1.six gears adjustable setting position . 2.compatibal with most notebook PC . 3.Provides a more comfortable typing position . 4. Improves overall posture . 5.separable modules extend other supplement functions. 6.Brings the screen within proper viewing range. 7.Relieves back ,neck, and eye strain. 8.specification: Height Adjustable Laptop Stand Places laptop in a comfortable position.Stabilizing front edge prevents sliding while adjustable tilt customizes your viewing angle.Adjusts from 4-1/2'' to 6-1/2'' above desktop .Nonskid rubber feet.SmartStand improves ergonomics for laptop users-instant.
The goal of ergonomics is to reduce or eliminate physical stress on the human body.When humans experience excessive amounts of repetitive stress,injury or disorder-such as carpal tunnel syndrome,back pain,and tendonitis-can occur.For instance,Degenerative Joint Disease in the cervical vertebrace (neck) can develop within three years ,affecting anyone who uses a laptop .Proper ergonomics lower health risks.
"