New Zealand has banned all inclined baby cots after the products were linked to multiple deaths in the US.
It is now illegal to sell or import inclined sleepers.
"These products carry the risk of suffocation and go against safe sleep guidelines," said the Ministry of Business and Employment and Innovation (MBIE) senior advisor for product safety Brendan Noonan.
Safe sleep guidelines advise babies should always sleep on their back on a firm, flat mattress.
"There are two main risks for babies sleeping at an incline: it can cause their head to fall forward or to the side and prevent an open airway, and they are at a greater risk of suffocation if they roll over, compared to a flat surface," said Noonan in a statement on Thursday.
Inclined sleepers have been linked to at least 73 infant deaths between 2005 and 2019.
Earlier this year two of the sleepers were voluntarily recalled by the companies which produce them.
The Fisher Price Rock 'n' Play Sleeper and the Kids II Rocking Sleepers were both recalled due to the risk of babies suffocating.
