Two men allegedly stole around £300 worth of pyjamas in separate incidents at a Boyes store in Louth.
On both occasions two men entered the store on Mercer Row in Louth with empty carrier bags before filling them with pyjamas and leaving, police said.
The incidents on April 16 (around 1.30pm) and April 17 (around 2pm) are believed to have involved the same two men.
Police want to speak to the two pictured men to help with the theft investigations.
The first man is described as being of medium build, with dark short hair and wearing a dark coloured coat.
The second man is believed to be of slim build, with very short hair and wearing a dark coat with a fur hood.
Anyone with any information on the incident, or who can identify the men, should contact police via 101 quoting incident 196 of April 17, stating that it is for the attention of PC 502 Dobson.