Position
Adjust the seat and positioning supports around the child to encourage a stable and comfortable seated posture.
Berollka Thessa Paediatric Seating System
SKU:
Stable support from floor play to table-height activities
Thessa combines adjustable postural support with a high-low base, helping children participate comfortably at home, school and during therapy.
3 sizes
Growing system
25-65 cm
Seat height
-6° to 35°
Seat tilt
Configured to suit the child • Trial support available
Have any questions? Send us a message!
Please note:
Contact us or email paediatrics@doability.com.au to organise a trial or learn more.
Overview
Paediatric hi-lo seating
Support that adapts around the child
Thessa provides adjustable seated support for children who need additional stability during learning, play, therapy and everyday activities.
Its configurable seating dimensions, interchangeable back supports and positioning accessories allow the system to be adapted around the child. The hi-lo base aids effortless transition between floor-level interaction, table activities and supported care.
Arrange a Thessa trial
What’s included in the standard package
The standard package provides the core seating, mobility and fitting components needed to create an initial Thessa configuration. Final back-support, harness and accessory selections are confirmed during assessment.
Seating and support
- Seat and hi-lo base
- Anatomically shaped seat cushion
- Short padded armrests
- Light headrest
- Foldable footrest
Handling
- 100mm castors
- Push handle
- Height and tilt controls
Ready for fitting
- Pelvic-harness attachment points
- Chest-harness attachment points
Designed and manufactured in Germany
Thessa is developed, designed and manufactured by Berollka at its facility in Sinsheim, Germany.
More than 30 years of German rehabilitation engineering sit behind every Thessa. Its robust construction, precise adjustability and modular design allow the system to be configured around the child and adapted as they grow and their positioning needs evolve.
German designed
German manufactured
Individually configured
Why consider Thessa?
Participate
Move between floor-level play, learning, therapy and table-height activities without changing seating systems.
Adapt
Review seating dimensions and support components as the child grows or their positioning needs change.
Hi-lo Positioning
From floor play, to table-height activities.
Thessa’s height-adjustable base allows the child to participate at a range of working heights. At its lowest setting, the system supports interaction closer to floor level. It can then be raised for table activities, therapy, transfers and supported care.
| Seat height | 25 - 65 cm |
|---|---|
| Seat tilt | -6° to 35° |
| Chair sizes | 3 |
Sizing
Thessa is available in three sizes, with adjustable seat width and depth to accommodate different body dimensions and growth.
The measurements below provide an initial guide only. Final sizing should be confirmed by a product specialist or treating clinician before ordering.
| Measurement | Size 1 | Size 2 | Size 3 |
|---|---|---|---|
| Seat width | 18 to 26 cm | 24 to 32 cm | 30 to 38 cm |
| Seat depth | 16 to 28 cm | 22 to 34 cm | 28 to 42 cm |
| Maximum load | 30 kg | 40 kg | 50 kg |
See whether Thessa is the right fit
A supported trial provides an opportunity for the child, family and treating team to review comfort, positioning, access and everyday usability before proceeding.
Contact our paediatric team to discuss the child’s current needs, confirm trial availability and identify a suitable starting configuration.
Request a Thessa trial Download the order form
Specifications
Technical specifications
Thessa is available in three sizes with adjustable seating dimensions and positioning angles. Use these measurements as an initial guide; final sizing should be confirmed during assessment.
| Measurement | Size 1 | Size 2 | Size 3 |
|---|---|---|---|
| Seating dimensions | |||
| SW Seat width | 18-26 cm | 24-32 cm | 30-38 cm |
| SD Seat depth | 16-28 cm | 22-34 cm | 28-42 cm |
| BH Back height—with standard upper back unit | 30-35 cm | 35-40 cm | 42-52 cm |
| BH Back height—with long upper back unit | 33-38 cm | 40-50 cm | 50-62 cm |
| TW Thorax width | 16-26 cm | 22-32 cm | 28-38 cm |
| AH Armrest height | 13.5-20 cm | 16-24 cm | 18-29 cm |
| Positioning angles | |||
| BA Back angle | 80°-120° | ||
| SA Seat angle | -6° to 35° | ||
| KA Knee angle | 90°-180° | ||
| Lower-leg adjustment | |||
| LLL Short lower-leg support | 16-25.5 cm | 22-33.5 cm | 28-43.5 cm |
| LLL Standard lower-leg support | 18.5-28 cm | 24.5-36 cm | 30-45 cm |
| Base and overall dimensions | |||
| SH Seat height | 25-65 cm | ||
| WF Base-frame width | 55 cm | 55 cm | 63 cm |
| TL Total length | 82 cm | 90 cm | 90 cm |
| Minimum total height | 58.5 cm | 60 cm | 67 cm |
| Maximum total height | 101 cm | 105 cm | 118 cm |
| Weight and capacity | |||
| Maximum user weight | 30 kg | 40 kg | 50 kg |
| Product weight | 27.6 kg | 30 kg | 33.8 kg |
Measurements provide an initial guide only. Final sizing and configuration should be confirmed with a product specialist or treating clinician before ordering.
Accessories
Berollka Thessa Paediatric Seating System
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- Adjustable thigh guide pads for positioning and support
- Width and angle adjustable with multiple pad and bracket options
-
- Adjustable pelvic guide pads for positioning support
- Width and angle adjustable with multiple pad sizes
-
- Foldable abduction wedge for lower limb positioning
- Available in multiple sizes for different user needs
-
- Lateral supports designed to provide trunk positioning on Thessa seating systems.
- Adjustable in height, width, and angle to suit individual user needs.
-
- Upper back support unit designed to assist trunk positioning on Thessa seating systems.
- Height adjustable and removable with multiple size options to suit different users.
-
- Extended upper back support designed to assist trunk positioning on Thessa seating systems.
- Height adjustable and removable with multiple size options.
-
- Adjustable footrest designed to support lower limb positioning on Thessa seating systems.
- Multiple angle options and sizes to suit different user requirements and positioning needs.
-
- Calf pad designed to support lower leg positioning on Thessa seating systems.
- Helps maintain alignment and reduce pressure during seated use.
-
- Positioning aid designed to support adjustment of the Thessa Headrest Light.
- Enables controlled head positioning through multi-directional adjustment.
-
- Angle adjustment mechanism for Thessa armrest holders using a gear segment system.
- Allows controlled positioning of armrest angle for user support.
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- Additional gas springs designed to increase lifting support on Thessa seating systems.
- Configurable options based on user weight and seat size requirements.
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- Smooth running castors designed for mobility on Thessa seating systems.
- Includes four castors with integrated parking brakes.
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- Pluggable therapy tray designed to provide a stable surface on Thessa seating systems.
- Removable design with grey plastic or transparent options.
-
- Cushion designed to fit therapy trays on Thessa seating systems.
- Provides a padded surface for support during seated activities.
-
- 2-point pelvic harness designed to support pelvic positioning on Thessa seating systems.
- Includes padded section for comfort with multiple size options.
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- 4-point pelvic harness designed to support pelvic positioning on Thessa seating systems.
- Includes padded section for comfort with multiple size options.
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