Exceptional design combined with the three important factors for a purchase decision, ergonomics, comfort and resilience, make Jack an important protagonist of a modern interior. The back shell is made of oak-veneered bentwood, the legs of solid oak. Comfort is enhanced by the seat and back upholstery. Jack can be easily vacuumed for cleaning. For stains and stubborn dirt, the simplest household remedy will also help: warm water (distilled water is best) and fat-soluble washing-up liquid are often enough to remove stains. Dab the stain with a sponge or microfibre cloth and then brush from the outside inwards. This will prevent the stain from spreading even more. Do not scrub!