Cushion Rigidizer

The Invacare Matrx Cushion Rigidizer is a lightweight wheelchair cushion accessory designed to create a firmer, more level base beneath a seat cushion. By fitting between the wheelchair seat rails, this rigid insert helps reduce the “hammock effect” commonly caused by sling seat upholstery, where the cushion can sag downward between the rails instead of resting on a stable surface.

Installed beneath the cushion inside the cushion cover, the Cushion Rigidizer helps improve cushion stability without adding unnecessary bulk. It is a practical solution for wheelchairs with sling seat upholstery, especially when the seat surface has softened, stretched, or begun to sag over time.

Key Features

• Helps Reduce Sling Seat Hammocking: Creates a firmer support surface to help minimize cushion sagging between wheelchair seat rails
• Level Cushion Support: Helps the wheelchair cushion sit on a more even base for improved stability and support
• Lightweight Plastic Insert: Adds support beneath the cushion without adding unnecessary bulk
• Installs Inside the Cushion Cover: Attaches to the bottom of the cushion and remains positioned inside the cover
• Designed for Sling Seat Wheelchairs: Recommended for wheelchairs with sling seat upholstery
• Supports Cushion Performance: Helps the cushion rest on a flatter surface so it can better maintain its intended shape and function
• Useful for Personal or Facility Use: Practical for individual wheelchair users, caregivers, hospitals, rehab facilities, seating clinics, long-term care, and shared-equipment programs
• Multiple Size Options: Available in several width and depth configurations to fit common wheelchair cushion sizes

Additional Features & Details

• Designed as an optional support accessory for wheelchair cushions used on sling seat upholstery
• Helps reduce the uneven support caused when fabric upholstery sags between the seat rails
• Can help provide a more stable foundation beneath the cushion during daily wheelchair use
• Useful when a wheelchair cushion needs additional support underneath to sit level
• Attaches to the underside of the cushion using the supplied adhesive backing
• Inserted inside the cushion cover so it stays integrated with the cushion assembly
• Select the correct model based on the wheelchair cushion size being used

Helps Create a More Stable Cushion Base

Many manual wheelchairs use sling-style seat upholstery, which can sag or “hammock” between the seat rails over time. When this happens, the cushion may not sit on a flat, stable surface, which can affect comfort, positioning, and how the cushion performs during daily use.

The Cushion Rigidizer helps address this by adding a supportive insert beneath the cushion. By helping create a more level seating base, it allows the cushion to rest more evenly across the wheelchair seat area.

Reduces the Hammock Effect of Sling Upholstery

The hammock effect can cause the cushion to dip between the wheelchair seat rails instead of staying level. This can create an uneven seating surface and may interfere with the cushion’s intended support.

By fitting between the seat rails, the Cushion Rigidizer helps reduce this sagging effect. It is a simple accessory for users, caregivers, and seating professionals who want to improve the support surface under a wheelchair cushion without replacing the chair or cushion.

Easy Integrated Installation

The Matrx Cushion Rigidizer is designed to attach to the bottom of the foam cushion inside the cushion cover. During installation, the cushion is removed from the chair, the cover is opened, and the rigidizer is positioned on the underside of the cushion before being secured in place.

Once installed, the cushion and rigidizer are placed back inside the cushion cover and secured to the wheelchair. This integrated design helps keep the rigidizer positioned underneath the cushion during normal use.

Practical for Personal, Clinical, and Facility Use

For individual wheelchair users, the Cushion Rigidizer can help provide a firmer, more stable base beneath a personal wheelchair cushion. This may be especially helpful for users whose sling seat upholstery has softened, stretched, or begun to sag.

For commercial and care environments, the Cushion Rigidizer is useful for seating clinics, rehabilitation facilities, hospitals, long-term care settings, and shared wheelchair programs where cushions need consistent support on sling seat wheelchairs.

Size & Model Options

The Cushion Rigidizer is available in multiple model options to match common wheelchair cushion sizes. Choose the correct model based on the cushion width and depth.

• CR14S: Fits cushion widths 12" to 14" and cushion depths 12" to 17"
• CR16S: Fits 15" or 16" wide cushions by 15" or 16" deep cushions
• CR16M: Fits 15" or 16" wide cushions by 17" or 18" deep cushions
• CR16L: Fits 15" or 16" wide cushions by 19" or 20" deep cushions
• CR18S: Fits 17" or 18" wide cushions by 15" or 16" deep cushions
• CR18M: Fits 17" or 18" wide cushions by 17" or 18" deep cushions
• CR18L: Fits 17" or 18" wide cushions by 19" or 20" deep cushions
• CR20S: Fits 19" or 20" wide cushions by 15" or 16" deep cushions
• CR20M: Fits 19" or 20" wide cushions by 17" or 18" deep cushions
• CR20L: Fits 19" or 20" wide cushions by 19" or 20" deep cushions
• CR22M: Fits 21" or 22" wide cushions by 17" or 18" deep cushions
• CR22L: Fits 21" or 22" wide cushions by 19" or 20" deep cushions

Compatibility

The Cushion Rigidizer is recommended for wheelchairs with sling seat upholstery. It is not intended for use on wheelchairs that already have a rigid seat pan.

Because cushion dimensions and wheelchair configurations vary, select the Cushion Rigidizer model that matches the cushion size and confirm that the wheelchair uses sling-style seat upholstery before ordering.

Who This Cushion Rigidizer Is Best For

The Invacare Cushion Rigidizer is appropriate for users and care environments that need:

• A firmer, more level support base under a wheelchair cushion
• Help reducing the hammock effect of sling seat upholstery
• Added support beneath a personal wheelchair cushion
• A lightweight rigid insert that installs inside the cushion cover
• Improved cushion stability for daily wheelchair use
• A practical cushion accessory for caregivers, seating clinics, hospitals, rehab facilities, long-term care settings, and shared wheelchair programs

Need Help Selecting the Right Cushion Rigidizer?

Need help choosing the correct Cushion Rigidizer size for your wheelchair cushion? Our team can assist with product guidance to help confirm the right model based on your cushion size and wheelchair seat style before ordering.

RETURN POLICY:

• Returnable with 30% restock fee. Fee waived for Matrx® product exchanges
• Customer is responsible for return shipping. Aracent Healthcare does not provide shipping labels
• For complete terms and conditions, please review our full Return policy

WARRANTY INFORMATION:

• 3 month limited warranty on material defects and workmanship. Excludes punctures, tears, burns, and the removable outer cover. Applicable to original purchaser only
• Any abuse or intentional misuse of the product will void the warranty
• For full details, please review our Product Warranty page