The Hannie is tested to the standard written for chair-mounted seats, but no seat is safe by certificate alone. How it is used matters just as much, at home and out.

What the standards mean
- EN 16120:2012+A2:2017 is the European standard for chair-mounted seats. It covers structural strength, the attachment system, restraint requirements and stability.
- AS/NZS 8124.3 is the Australian and New Zealand standard that limits the migration of certain elements from materials children may put in their mouths.
- CPN No. 11 and US FDA 21 CFR add US consumer product and food-contact material requirements, which matter for a tray that children touch and mouth constantly.
Five everyday habits
- Harness on every time, even for a 90-second snack.
- The right chair underneath: sturdy, four legs, a firm flat seat at least 38 by 35 cm and a backrest at least 30 cm high.
- Attach the seat exactly as the manual shows and check both straps are tight before every use.
- An adult within arm's reach, always.
- Respect the limits: 15 kg in Baby Chair mode and 25 kg in Toddler Seat mode.
Warnings from the user manual
- Always use the chair attachment system and the restraint system, and check both are fitted correctly before use.
- Check the seat is secure and stable on the adult chair before every use, and that the rubber feet are working as contact points.
- Only use the seat for children who can sit upright without help.
- Position the chair so your child cannot push their feet against the table or any other structure, as this can tip the chair over.
- Never let your child push away from the table.
- Never lift and carry your child in the seat.
- Never use the seat in a motor vehicle.
- Do not use the seat if any part is missing, torn or broken.
- Only use accessories and replacement parts approved by the manufacturer.
Out and about
Café high chairs can be missing harnesses or be damaged. Bringing your own seat means the set-up at a restaurant is the same as at home: the same harness, the same fit rules and the same familiar seat.
Why the harness matters
The user manual warns that children have suffered head injuries, including skull fractures, after falling with or from booster seats. Never leave your child unattended, and never use the seat freestanding on the floor, on a table or in wet places.
Need a hand?
If any part of your seat is cracked, torn or not fastening properly, stop using it and send us a request so our Melbourne team can help.
More from Hannie
Visit hannie.com.au for the full Hannie range, or shop at coolkidz.com.au.
Details in this article are taken from hannie.com.au and were checked on 3 October 2026.
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