Beyonce is joining forces with Pharrell to donate pretty cool items for The Lung Transplant Project.

Bey is donating her iconic wide-brimmed, black “Formation” hat. On the bottom of the brim she wrote “All My Love”, and signed it.

Pharrell is donating two pairs of Adidas originals. The first pair has the producer’s autograph along with a motivational message. The second pair will be a custom pair for the winning bidder.

Pre-bidding has begun on Heritage Auctions, and the live bidding is scheduled for Monday. The hat alone is believed to bid for $2,000.