YOSTERis3 - SOUND APPEARANCE, FOR ULTIMATE PERFORMANCE. Values that shape. Values that drive. YOSTERis3 stands for reliability, quality and timelessness. But YOSTERis3 also stands for perfect seating quality, functional efficiency and top seating performance. All this makes YOSTERis3 an ideal solution for people who are looking for a chair that does not dominate the room, but just fits, with effortless composure, into classical working environments. It is the perfect chair for everyone who wants to sit pleasant and healthy. YOSTERis3 has an unobtrusive presence and emanates calm and security. YOSTERis3 is also a high-performing chair that has the functional and ergonomic strength which allows people to work comfortably.