Tens of thousands of sippy cups and stainless steel baby bottles are being recalled due to fears they could poison children.

The base of these bottles and cups, made by Green Sprouts, can come off and expose a solder dot that contains lead, posing a potential hazard to children.

There have been no reports of injuries yet, according to the US Consumer Product Safety Commission, but there have been seven cases in which the base broke.

Customers are being urged to apply for a full refund on the $14 to $19 bottles which are sold in Wholefoods and Amazon among other retailers.

High levels of lead exposure in children can cause irreversible brain damage, comas, web page convulsions and even death, according to the World Health Organization (WHO).

'Children who survive severe lead poisoning may be left with intellectual disability and behavioral disorders,' the agency says.

Pictured above are the three bottle types that are being recalled by Green Sprouts, sold for around $14 to $19 each.

Customers are being urged to return the bottles or throw them away and apply for a full refund