The career of Red Sox icon David Ortiz is coming to a close. His Red Sox have only four games left in the regular season and then move into the playoffs. Maybe he plays all the way through the World Series. Even if that's the case, Ortiz's career has no more than five weeks left.

Once he's retired, though, he won't be expired. So he says in his new shirt:

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The shirt can be purchased for a limited time on teespring.com for $25, either men's or women's. There's a long sleeve shirt for $30 and a hoodie for $34. The sale ends next Thursday.

This is a charitable venture. One hundred percent of the proceeds go to David Ortiz's Children's Fund. What does that do? Here's the description from the official website:

The David Ortiz Children's Fund is committed to helping children in New England and the Dominican Republic who do not have access to the critical pediatric services they need. We are proud to partner with Massachusetts General Hospital for Children and World Pediatric Project through its work with CEDIMAT to fulfill its mission. Working together, we're increasing the number of children receiving lifesaving surgeries. To date, we have netted more than $2 million for children in need and saved over 500 lives in the Dominican Republic and has helped countless others in the New England area.

So go grab a shirt, Big Papi fans. It's pretty cool and goes for a great cause.