Clek Olli expiration
The Clek Olli expires 9 years after its date of manufacture.
Check your Olli
What to know
Clek's product page for the Olli states plainly that Olli has a 9 year expiration, the same figure the rest of the Clek lineup carries. The Olli is a backless belt-positioning booster with rigid-LATCH connectors that lock it to the vehicle, so it does not fly around the back seat when it is empty. Nine years is unusually long for a backless booster and it runs from the date of manufacture on the seat's label, not from your purchase. As a booster it is not certified for aircraft use, since airplane seats have lap belts only.
The date of manufacture is on the seat itself. The date of manufacture and serial number are on a label on the seat; the exact spot varies by model (Clek's support site has per-model guides for the Foonf, Fllo, Liing, and Oobr, typically on the back or underside of the shell).
Safety note: SeatCheck summarizes manufacturer and NHTSA guidance, but the label on your own seat and its manual are the final word. When in doubt, contact the manufacturer with your model and serial number.
More about Clek seats
Full policy, label locations and crash-replacement rules on the Clek brand page.