http://winternals.com/Tshirt
or call 1-800-408-8415

It's for "Recovery Manager 3".

"To receive your free t-shirt, start by downloading your Recovery Manager 30-day trial today. Once you've evaluated the software, we'l ask you a few brief questions regarding your experience. And in exchange for your feedback, we'll send you a free Recovery Manager 3.0 t-shirt".