Here's your chance to pick up a Japanese language t-shirt from Jason. Jason is a big supporter of bigSUMOfan.com and he runs Jason's All-Sumo channel on Youtube. He has posted several shirts for sale.
You can buy his T-shirts here. Taking this link will not add a shirt to your bigSUMOfan shopping cart. You cannot buy Jason's t-shirts on bigSUMOfan. It is only available through Jason's link.