Privateislandparty.com - Patriotic Squid Hat 5937 $4.99 These costume accessory Patriotic squid hats are awesome! They are made of a felt-like polyester material, one size fits most adult heads up to 22" cicumference. About 15" tall with the tentacles-arms. Great Patriotic accessory for any aquatic theme, Patriotic event, Memorial Day and Independence Day! Wear it in Pride. Pass out the red, white, and blue squid hats to get the party started.