Updated for UN R129 04 series · Supplement 4 (in force 4 June 2026) R129 car seat OEM / ODM →
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R129 guides

R129 guides for brands, importers and retailers

Practical explainers on UN R129: deadlines, labels, booster rules, sourcing and the differences from R44 — written from the regulation text.

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Sourcing R129 car seats: a checklist for brands and importers

Before you sign with a car seat factory, check these points. They come straight from what R129 requires — and from the questions we get asked by buyers.

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Booster cushions under R129: the 125 cm rule explained

Backless booster cushions are allowed under R129 — but only from 125 cm, and only if they lift the child high enough. Here’s how the rule works.

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R129 04 series: the 1 September 2026 and 2027 deadlines explained

Two dates in R129 §16 matter to everyone selling child seats in 2026–2027. Here is what they say, what they don’t, and how to prepare.

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How to read an R129 approval label

The approval label tells you who approved the seat, under which series, for which category and for which statures. Here’s how to decode it in a minute.

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The R44 sales ban: what it means for retailers, importers and parents

Since 1 September 2024, R44-approved child seats can no longer be sold in the EU. Here is what that covers — and what it doesn’t.

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i-Size vs R129: are they the same thing?

People use “i-Size” and “R129” interchangeably. They overlap, but they are not the same — and the difference matters when you check a seat against a car.