A range of cups sold at Kmart are being recalled, due to the 'risk of serious injury'

Anko Double Walled Coffee Cups with Lids have already caused an injury, and buyers should return it immediately for a refund.

Product Safety New Zealand says when filled with hot liquid, the lid may rapidly pop off, because it has no pressure release valve.

It says there is a risk of serious injury from hot liquid or steam burns .