The Nilper SM900 seat uses a cold foam to prevent changes in the back and seat, as well as a long back to fully cover the back for comfort when leaning, while maintaining good user health during long-term use. The back and seat are made of hot-pressed wood, and a steel strap is used to connect the two parts. Other features of the SM900 include a special material for quiet and smooth movement on different surfaces. This chair has a five-step steel base with chrome plating in order to increase the beauty and prevent rust and damage. The handle of this model is fixed and made of steel profile.