Friends of a former English teacher in Korea now battling cancer in the U.S. are asking people to buy a T-shirt that he helped to design.

The shirt designed by Tyler Schroeder is now being sold online to help support his medical fees. For every $20.99 T-shirt sold, $6 will go toward his ongoing medical expenses and his family’s transport costs.

The 26-year-old is currently in a hospital in Minnesota after being moved to the U.S. from South Korea, where he was first diagnosed and operated upon to remove a tumor on his back.

Schroeder, originally from the state of Iowa, was teaching English in Yeosu when he first sought medical help complaining of a backache. He flew back to the U.S. on May 29 and is now receiving chemo and radiation therapy, as well as rehab.

In a recently filmed message posted on his fund-raising site, Tyler said: “It has been a long journey but the journey has been made doable by all the compassion and sincerity people have shown me. Every day I wake up to tens and hundreds of messages and emails. It has been amazing; I can’t even put into words what these efforts have done for me. I don’t know what I did to deserve this but you are really making this fight worth fighting.”

The Tyler Fund on donation website Indiegogo has already raised $13,530.

The T-shirts, which read “Love: pass it on. The Tyler Fund,” will be on sale until July 9.

For more information go to: www.indiegogo.com/thetylerfund.