The gel Consumer Product Safety Commission says the packs contain diethylene glycol and ethylene glycol. These chemicals can pose a poisoning hazard to children or adults if they leak out of damaged freezer packs.
The recall affects Ci Sport three-piece, expandable, insulated lunch box set, which includes the lunch box, aluminum bottle and the freezer gel pack.
The lunch box of the recalled set has the code "1-61731-99-57" printed on one of the two white labels that are sewn under the white fastener inside the main compartment.
They were sold at Costco Wholesale Clubs, Leon Korol and Cost U Less stores between May 2007 and September 2008 for about $10.
For more information, see the Consumer Reports article here.