Feltstars Poker has special sit and go's ($11) that award the winner a coupon for a
Feltstars hat or
Feltstars t-shirt.
These special sit and go tournaments appear at the top of the sit and go lobby. Check the tournament lobby for each before registering. Some are hat games, others are t-shirt games.
You do not automatically get the coupon when you win. Winners will need to e-mail
winners@feltstars.com with their name and mailing address (and shirt size if it was a shirt game). It probably wouldn't hurt to include the tournament number as well.