Remember the “Let Trey Sing” t-shirt that Bob Weir was sporting on the final night of this past weekend’s epic Fare Thee Well run? You can now buy your very own!

The original shirts, which are the work of music manager Ben Baruch, are currently available for $20 at LetTreySing.com. To make things even better, all of the profits will go to the Phish-affiliated Waterwheel Foundation and the Grateful Dead-affiliated Rex Foundation.

As previously reported, the core four serving members of the Grateful Dead played their last show together at Chicago’s Soldier Field on Sunday, July 5. You can check our recap from the concert here.