In preparation for Marcus Mariota’s NFL debut Friday, ButiGroove has begun selling an official logo T-shirt to benefit the quarterback’s new Motiv8 Foundation.

The $28 T-shirt is on sale at ButiGroove, HiLife Waikiki and the Navy Exchange but is not available online, said BJ Sabate of ButiGroove.

Mariota debuts as the Tennessee Titans’ quarterback in a Friday exhibition game at Atlanta. The game is schedule to be shown on the NFL Network at 1 p.m.

The T-shirt incorporates the No. 8 Mariota has worn since elementary school soccer with islands representing his heritage and wings denoting his time with the University of Oregon Ducks.

A second T-shirt is planned to coincide with Mariota’s Sept. 13 NFL regular-season debut against Tampa Bay.