Attack on Titan is a Japanese manga series written and illustrated by Hajime Isayama. The series began in 2009 and has up till now been collected into 13 volumes.
An anime television series adaptation was produced by Wit Studio and licensed by FUNimation Entertainment among others. FUNimation streams this on their website as a simulcast series and plans to release the series on North American home video in 2014.
Lady Sandra Home Fashions Inc. has teamed up with FUNimation Entertainment to create a collection of throws and blankets.