Lux and Cubic Seat Cushion for Stacking Chairs. Instantly enhances seating comfort: Jan Kurtz offers a flat yet extremely comfortable cushion as an optional addition to its garden chairs. Made from weather-resistant materials, the seat cushion can withstand a shower on the terrace or balcony. If the weather and dining habits have taken a toll on the cushion, the firmly stitched padding is also happy to take a spin in the household washing machine (up to 30°C). With its two ties, the seat cushion can be securely fastened to the Lux or Cubic stacking chair from Jan Kurtz with a bow, ensuring that the wind doesn't carry it away unnecessarily.