These are Physix office chairs, originally designed by Alberto Meda in 2012. These particular examples were produced by Vitra in Germany in 2014. The frame and armrests are comprised of polyamide, while the five star base is made of aluminum. The listed price is for one chair and we have ten available for purchase. The chairs measure 31.5 inches deep and 25 inches wide. With the continuous height adjustment, the height of the chair ranges from 34.75 inches to 39.2 inches, and the seat height ranges from 15.25 inches to 20 inches. Some of these pieces do show wear from previous use on the mesh, including small stains and one chair having a small rip. Overall, these chairs are in good to very good condition. Please see photos.