The Ham chair has a rigid polyurethane structure. The padding is in fire-resistant non-deforming polyurethane and the spring system consists of elastic belts. Visible shell in curved wood in various essences or veneers. Automatic tip-up seat with joints in noise-damping nylon. The upholstery of the Ham chair can come in Pelle Frau® leather from the Color System, fabric or velvet. Fixed using metal bases with scratchproof and shock-resistant epoxy powder paint.