Houdini 27

Designed for single or split backed double seats

This is a vehicle positioning harness for children and adults with special needs such as Autism Spectrum Disorder (ASD), Attention Deficit Hyperactivity Disorder (ADHD), Down Syndrome, Asperger’s disorder, developmental delay or other challenging behavioural needs where the person has problems with attention and safety. Providing safer travel and management of these loved ones when travelling in the car or other means of transport.


Alternatively, this harness can also be used to offer postural support and assist in seating the occupant in an upright sitting position for persons with physical disabilities such as Cerebral Palsy (CP) and other significant physical disabilities or complex needs where extra support and positioning is required during travel.

Fits most types of vehicle seating including low or high backed, and is used on aircraft seats by many leading airlines. The two transverse fixing straps do not interfere with the passenger behind using the drop down trays (depending on airline). It is recommended to seek permission from the airlines to use the Houdini 27 harness prior to departure.

The harness consists of a full body 5-point harness connected to a back pad which is fitted horizontally around the vehicle seat back with two horizontal fixing straps.

The Houdini 27 harness is identical to the Houdini 28 harness, except the mounting straps are different for different seats.



Please note, to comply with safety regulations, the vehicle safety belt must always be worn over the top of the harness. The combination of the existing vehicle safety belt and the secondary harness offers added security for the passenger.

It is advisable to carry out a safety and risk assessment to first consider the problems involved and what the situation would be if the passenger is not wearing a special needs harness. Could they be in danger to themselves and to other passengers in the vehicle or even other drivers on the road if they are not safely seated during travel?

safety webbing slicer is included with every vehicle harness and must be kept in the vehicle as a safety precaution.


  • Only suitable for single backrest seats eg: front vehicle seat, split rear backrest seats, bus and airline seats
  • Attaching straps go horizontally around the rear of the seat it is installed on
  • Full 5-point harness for good support (crotch strap between the legs doesn’t need to be used if not required)
  • Access to rear of seat is necessary when installing
  • Cross strap can be purchased for additional security of the shoulder straps (prevents the shoulder straps been pulled off)
  • No gap required between seat and backrest


Introduction to Houdini Vehicle Harnesses
How to install Houdini 27 Harness
Washing Instructions
Code Size Age Group Buckle Type
4604-2702-017 27A Paediatric Standard Centre-Release
4604-2702-026 27ASB Paediatric Anti-Escape
4604-2702-031 27A Paediatric Pen-Key Release
4604-2703-017 27B 7 years to adult Standard Centre-Release
4604-2703-026 27BSB 7 years to adult Anti-Escape
4604-2703-031 27B 7 years to adult Pen-Key Release


  • Hand wash only – in warm water up to 70/80 degrees.
  • Use mild detergent/anti-bacterial liquid wash.
  • Mild disinfectant can be used.
  • Do not use bleach
  • Do not tumble dry

12 months


Does this harness require a vehicle tether point?




No. This harness does not require any tethering; it is not a safety harness. It is simply attached to the vehicle seat with the securing straps.


If I can’t pass the strap between the seat and the backrest, what can I do?




This can be common. Most vehicles have a carpet flap at the rear which prevents the straps coming vertically around the seat. In virtually all cases the carpet can be cut with a pair of scissors or a knife to provide access through.


How do I Care for my Harness when it needs washing?


  • Harnesses must be cleaned by Hand washing only, in warm water up to 70 or 80 degrees.
  • Use a mild detergent/anti-bacterial liquid wash.
  • Mild disinfectant can be used.
  • Do not use Bleach or Tumble Dry your harness.