Here's another shirt that is likely exclusive to Hot Topic stores.
This light gray tee comes in all adult sizes. It's also refreshing to see them adding modern Sonic into their design mix and also featuring the somewhat neglected Knuckles. The shirt fabric is light-weight but the 'faux aging' is fortunately not used on this design. Sonic & Knuckles both employ lesser-used art so the shirt does not look generic. Both are posed ready for action. This shirt generally retails for 19.99 and can be bought on the HotTopic site and offline, in stores in November 2009. It should be available for much of the winter season. This shirt is in the SonicGear personal collection.