Green Day brings John Lennon's "Working Class Hero" song to life with the new Hard Rock Signature Series 24 t-shirt benefiting "Instant Karma: the Amnesty International Campaign to Save Darfur."

The front of the Signature Series T-shirt Edition 24 features a tonal graphic of Billie Joe Armstrong playing guitar. The back of the shirt bears the signatures of each of the band members: Billie Joe Armstrong, Tre Cool and Mike Dirnt. The unisex T-shirt also incorporates the words "Working Class Hero", the title of the John Lennon song performed by the band on the Instant Karma album. The design, created by Green Day, is set on a heather-green 100% cotton T-shirt.

A portion of the proceeds from the sale of each shirt benefit "Instant Karma: the Amnesty International Campaign to Save Darfur." The new global "Make Some Noise" project from Amnesty International aims to raise awareness and mobilize millions around the urgent catastrophe in Darfur, Sudan where women, children, and men are being killed or displaced every day.