Mix Leatherette (Insert) & Synthetic (Sides) TWO Front Custom Car Seat Covers Fits on BMW 3 Series 2006-2011 Seats (2006-2011 E90 E91 sedan/estate, BLUE / BLACK SIDES) You are getting two seat covers, one for the driver's seat & one for the front passenger's seat. Headrest covers included Leatherette is a form of artificial leather, made by covering a fabric base with plastic. The fabric is made of fibre which is then covered with a soft PVC layer. No Professional Installation Required: These seat covers are designed to be easy to installed, no tools needed. EASY FIX SYSTEM. These can be installed in minutes. They are also easy to removed. Air bags: These seat covers allow the air bags to deploy freely. All the materials are from the European Union. Europe: 5-10 days delivery, USA / Canada: 10-15 days delivery, Australia / Japan: 10-15 days delivery, Worldwide: 10-50 days delivery.