Check the listing for details. FDNY Honor & Remember 343 9/11 Memorial Firefighter Hat 100% Cotton Embroidered. Condition: Used. Listed at 18.00 USD. The FDNY Honor & Remember 343 9/11 Memorial Firefighter Hat is a 100% cotton hat designed in remembrance of the firefighters who lost their lives on September 11th. With a theme of firefighting and rescue, this New Era hat is a collectible item that pays tribute to the bravery of these brave individuals. It is a must-have for supporters of the FDNY and those who appreciate historical memorabilia related to firefighting and rescue.