Evolution Back Deep™

Evolution Back Deep™

Adjustable deep contouring back support for users with fair to poor trunk control. 

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The VARILITE Evolution Back is the back system of choice for wheelchair users with moderate to maximum support needs. The Evolution Back Deep has the added benefit of deeper contouring and extra lateral support. Available in tall sizes and a variety of widths, it is the ideal back system for the geriatric user, or anyone with fair to poor trunk control.

Therapists recommend the Evolution Back Deep because it is easy to mount and remove with one hand, even for the user without fine motor skills. The system is lightweight to conserve energy expenditure for the client who manually propels. Mounting hardware, which comes pre-installed, provides a wide range of lateral, seat-to-angle, and seat-depth adjustment.

Users and caregivers value the Evolution Back Deep’s comfort and effective support. Sleek and strong. Lightweight and user friendly.

Effective postural support, adjustability, comfort and simplicity have made the Evolution Back a favorite of seating specialists. It handles third-party secondary supports with ease and works with the VARILITE PAL to provide an elegant, low-profile, integrated back and swing-away lateral support system. VARILITE Evolution Back Deep systems are available in a range of widths.

The Hardware
Adjustability at all four attachment points. To allow for client growth, aluminum brackets permit 1 inch (2.5 cm) of lateral adjustment. Steel pin bars slide anteriorly and posteriorly to allow for back angle and seat depth adjustment. Pin bars simply slide in the receiving cane clip and snap the system into place. Quick, easy, and no unsightly J-hooks.

The Shell
Made from aluminum and trimmed with protective edging, the VARILITE Evolution Back shell is the lightest in the industry. Back panel is flat for flush mounting of headrest hardware. Contoured sides provide lateral support and attachment area for hip belts, laterals and hip guides. Shell has a handle cutout for easy shell removal by individuals with limited hand function. Slots accommodate different chair and mounting configurations. Shell supports users up to 250 lbs (115kg).

Air/Foam Cushion
VARILITE Air-Foam Floatation. A two-way valve allows air in and out of the cushion for a custom fit. Sculpted foam fits shell contour without bunching. Cushion foam is thickest along the vertebral column for added comfort and protection. Four-way-stretch knit fabric for compliance is bonded to the foam. Fabric is puncture and water-resistant. Cushion is oversized to protect the user during reaching or weight-shifting activities.

The Cover
Provides maximum padding and protection. Four-way-stretch mesh top fabric wicks moisture away from the body. A large loop panel on the backside of the cover securely attaches to hook strips on the shell, while a wrap around handle flap prevents downward slippage for even the most active user. Reticulated foam inside the cover promotes air exchange and improves pressure distribution. Evolution Back cover meets ISO 7176-16 ignition resistance standards for upholstered wheelchair components. Machine washable.

Evolution Back Deep systems include a PSIS block and Supplemental Lateral Pads. These accessory pieces are made from closed-cell foam that will not absorb water and is resistant to bacteria. They attach to the Evolution Back Deep shell with adhesive hook and loop for placement based on individual client needs.

The PSIS (posterior superior iliac spine) block provides support to the sacrum at the PSIS level, promoting an anterior pelvic tilt and spinal extension. The Supplemental Lateral Pads helps users who lean to one side maintain an upright position, and are especially beneficial for geriatric clients.

Extended pin bars are standard with the Evolution Back Deep. Extended pin bars allow for even greater seat depth and angle adjustability.

Note: To determine HCPCS Code, Item Number, and MSRP, you must first configure this product.


VARILITE provides a warranty on all new products. Please read the Limited Warranty, Limitations of Remedies and Liability for the U.S. and Canada for more information about the terms of warranty.

If a problem arises with your VARILITE product, please call our Customer Service Department at (800) 827-4548. All warranty claims will be handled promptly.

You can also start a warranty claim with us by filling out the online Return Authorization Form below.  Warranty issues are commonly evaluated via photos and to do that, please select “I have a warranty/repair questions” when you start your claim.   

If you would prefer to send your product back to us, it will require a Return Authorization (RA) number prior to sending the product in for repair or replacement. To expedite the handling of your return, please follow the guidelines below: 

  • Write the RA number clearly on the outside of the shipping carton. 

  • Fill out the RA form completely. 

  • Do not send cushion covers. 

  • To protect the health of our employees, please clean used cushions before shipping. Soiled cushions will not be evaluated and a $20 handling fee will be charged. Cushions can be wiped clean with a damp rag and sprayed with a disenfectant such as Lysol. 

Please refer to the Return and Repair Policy for complete instructions.

Return Authorizaton Form