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Etac Cross 3A back support

Made to fulfill the toughest positioning targets of dedicated rehab professionals.

Reach your positioning targets

There is no other back support like the Cross 3A.

Explore the possibilities and discover how your positioning targets are being achieved without using expensive back support systems. Customize the shape and support directly, with the user positioned in the wheelchair. You will get instant feedback and can always reshape the support as needs change.

Proximal stability is the starting point to postural control. The Cross 3A Back Support is a tool meeting your positioning targets, based on the users individual abilities and body shape. To seek ability and improving mobility and activity. This is what we call Ability Based Seating™.

Thank you for shaping up!

Pick your country below to find the nearest Etac distributor.

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Pick your country below to find the nearest Etac distributor.

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Find your distributor

  • Features

  • Facts

  • Accessories

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How to shape Up

How to shape Up

Poor posture takes out all of our energy. To cope with being active, being seated in a wheelchair requires proper back support. Learn more about how to use the Cross 3A back settings in the following pages. Let´s shape up!

Achieving proximal stability is core

Achieving proximal stability is core

Creating a sufficient pelvic support is the first step towards proximal stability. The seat to back angle and lower back straps are the core settings to stabilize the pelvis.

Sitting tolerance

Sitting tolerance

The Cross 3A back support offers adjustments for a supportive well balanced back support. It is covered by a resilient high density foam cover which evens outs the pressure. No peak pressure on sensitive zones – an important condition for improving the user´s sitting tolerance over time.

Ability Based Seating

Ability Based Seating

By an ability based approach we seek to strengthen the user´s abilities. Providing a supportive position in balance, improves the activity level. Ability is precious. Use it or lose it. Enable it and improve it.


Back Cover

6 tension adjustable back straps. High density foam cover in elastic polyester.

Back Height

Adjustable between 32–45 cm

Lumbar Angle

Adjustable between -8º till +18º

Seat depth

Short frame: 36-42 cm

Seat to back angle (hip)

Adjustable between -5º till +20º

Cross 5 Trunk support, adjustable

Adjustable in height and depth. For body close fitting and space for free arm movement, the rod that holds the pad is available in four versions. Detachable without tools. Sold per piece.

Trunk support, swing away

Adjustable in height and depth. No conflict with arm supports thanks to the rear fitted hinge. For body close fitting and space for free arm movement, the rod that holds the pad is available in three versions. Sold per piece.

Trunk support rod

For a body close setting, without interfering with the user´s arm movement. Straight, with inward bend 1.5 cm (½") or 4.5 cm (1¾") or outward bend 1.5 cm (½").

Trunk support

Soft padding. Adjustable in height and depth. Two optional width positions. Cover: Dartex.

Rear cross brace

Stabilizing cross brace. Fitted in the 3A profile. Foldable with snap lock.

Side cushion

Embracing support. Rotate to choose between two different shapes. Supported by the arm support and/or side stop straight. Sold per piece.

Side stop, straight

Combine with wedges or side cushion. Height adjustable. Sold per piece.

Back wedge plush, short

15 cm (6") long. Soft wedge that attaches with velcro under the cover. Combine with side stop straight or with width extending. Upholstery: dark grey plush. Sold per piece.

Back wedge plush, long

30 cm (12") long. Soft wedge that attaches with velcro under the cover. Combine with side stop straight or with width extending. Upholstery: dark grey plush. Sold per piece.

Side stop, width extending 3 cm (1")

Extends width by 3 cm (1") per side. Combine with wedges and larger cover. Sold per piece.

Side stop, width extending 1.5 cm (½")

Extends width by 1.5 cm (½") per side. Combine with wedges. Sold per piece.

Wedges, model 1 (small)

Cell foam with Velcro attachment. Length: 13 cm (5"), Width: 9.5 cm (4"), Height: 2 cm (¾"). Sold per pair.

Description Item no.
Mod 1. L 13 cm, W 9.5 cm, H 2 cm 28030

Wedges, model 2 (medium)

Cell foam with Velcro attachment. Length: 19 cm (7½"), Width: 12 cm (5"), Height: 2 cm (¾"). Sold per pair.

Description Item no.
Mod 2. L 19 cm, W 12 cm, H 2 cm. 28139

Wedges, model 3 (large)

Cell foam with Velcro attachment. Length: 20 cm (8"), Width: 17 cm (6½"), Height: 2.5 cm (1"). Sold per pair.

Description Item no.
Mod 3. W 20 cm, L 17 cm, H 2.5 cm. 28140

Attachment, chest harness

Assembled on rod for head support.

Head support

Adjustable in height, depth, angle and sideways. The upholstery is detachable and washable. Combine with head support attachment.

Head support attachment

Easy detachable with snap-lock.

Tidy hygiene back support cover

Hygiene cover for 3A back support. Material: Dartex. Water repellent, wipeable with wet cloth, washing 90° C. Can be supplied with customized embroidery.

Fixed push handles

Comfort cover

With extra thick padding. Also available for high back. Dark grey plush.

Bow handle

Height adjustable and detachable.