The Invacare Matrx PSP (Posture Seat Polymer) cushion is a lightweight solution designed to provide both skin protection and positioning. This cushion requires zero maintenance, providing peace of mind to users. The Matrx PSP cushion features a PS foam base that provides stability and support, combined with a polymer overlay that adds extra protection and shear reduction. This foam cushion is designed to off-load pressure from the hips and thighs, promoting support and stability. Additionally, the Matrx Posture Seat Polymer cushion includes the Startex inner cover to provide extra moisture protection.

Features

Includes hook and loop strips
Rear cushion radius and waterfall front edge
Gently contoured to provide neutral leg position
Startex™ inner cover for extra moisture protection
Moisture resistant and breathable to keep cool and dry
Unique waffled relief zone allows immersion in ischial area
Molded polymer insert for extra protection and shear reduction
Startex™ outer cover - reversible can be used smooth or fabric side out
Molded high resilient polyurethane foam made with Ultra-fresh™ anti-microbial

NOTE: Actual cushion width is ½" narrower than stated size and cushion depth is 1" longer than stated depth due to rear cushion radius.

Specifications

Invacare Matrx PSP Cushion
Width	14", 16", 17", 18", 20"
Depth	16", 18", 20"
Height abductor/adductor	3.5"/3.5"
Height at leg trough	2.75"
Product weight	2.2 lbs. and up
Weight capacity	300 lbs.

Warranty

Manufacturer warrants this product as under:

Two years warranty
Manufacturer will not warrant parts damaged by improper installation and/or repair on the part of the individual owner or normal wear & tear.
Manufacturer does not warrant parts damaged by neglect, accident or misuse, nor parts altered or serviced by an agency not authorized by the manufacturer.
Parts under warranty will be covered at no cost.
Any labor cost for service under warranty is not covered as per our terms of sale.
Standard manufacturer terms & conditions apply for warranty of this product.

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Return

No returns accepted for Hygiene & Bath products due to health concerns

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FAQs

Q. How can this cushion help with pressure relief?

It’s designed with a waffled relief zone and molded polymer insert to reduce pressure under the hips and thighs, helping lower the risk of skin breakdown.

Q. Will it fit my wheelchair?

It works with most standard wheelchair seat sizes. Check your seat width and depth, then choose the closest matching size from 14"–20" wide and 16"–20" deep.

Q. How much does the cushion weigh?

The cushion starts at about 2.2 lbs, making it easy to handle and position without adding much weight to your chair.

Q. Is this cushion good for long hours of sitting?

Its foam base and polymer top layer provide stability, moisture control, and comfort, which can be helpful for extended daily use.

Q. How do I clean and maintain it?

The removable Startex™ cover can be wiped down or washed. The cushion itself requires no inflation or mechanical upkeep.

Q. What is the weight limit for this cushion?

It supports users up to 300 lbs. For safety and performance, choose a size that fits your seating surface properly.

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Invacare Matrx® PSP Wheelchair Cushion

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