Lung Lobe Lumbar Plastic Piece (no cloth cover) 40 x 40 cm Overview This listing is for the lung lobe shaped lumbar plastic insert only, without a cloth cover. The insert is designed as the structural core for 40 x 40 cm lumbar cushions and seat supports. It is made from polypropylene modified plastic and produced with a splicing process to deliver consistent shape and stable support for seating applications. Key benefits Structural support: Provides a stable, contoured core to maintain lumbar shape when paired with a compatible cover and cushion. Durable material: Polypropylene modified plastic offers longlasting dimensional stability for repeated daily use. Precise fit: Sized 40 x 40 cm to match standard lumbar cushion covers and shells. Easy to integrate: Designed for simple insertion into existing 40 x 40 cm covers or cushions, including polyester covers. Versatile compatibility: Works with a variety of cover styles and the available waist support color options, including basic black, light gray, brown, khaki, light green, pink, airbag black and airbag gray, with or without backplate protective cover. Specifications Product: Lung lobe lumbar plastic piece (no cloth cover) Size: 40 x 40 cm Pattern: Solid color (plastic core) Jacket material: Polyester (reference for compatible covers; item sold without cloth cover) Weaving process: Splicing Filler: Polypropylene modified plastic Style: Modern and simple Usage scenarios: Office, home, car Practical applications Office: Insert into a 40 x 40 cm cover to create a lumbar insert for office chairs and improve seating consistency during long desk sessions. Car: Use as the inner core for a vehicle lumbar cushion to maintain shape and fit in automotive seats. Home: Add to sofa or armchair cushions as a replaceable core to restore form and support for everyday seating. Notes This item is the plastic core only and does not include any cloth cover or external padding. Compatible covers and protective backplates are sold separately; check cover dimensions and style before to ensure proper fit.