The SIM chair by Jasper Morrisson for Vitra. 
The clear lines and simpel yet practicable design make this piece a future classic. 
There are 3 available. The chairs come with original sticker dated November 2006. 
The plastic has some light scratching consistent with use. All gliders are still attached. 
Online prices are typically a lot higher. 
 
Just like all vintage pieces small signs of use are possible.