A detail of the shirt. Still can't read what it says over Robotnic and Knuckles. "Clothing that Kicks". Look at the unusual Sonic art. Looks like it was made JUST for this shirt, too.
Hedgehog With Attitude shirt. An unusual long sleeve that is NOT a sweat shirt. Unconfirmed as American-only produced item. As you remember, the whole "With Attitude" thing is very very UK-area slogan.
Sonic Sweat Shirt. Sweats are much more rare than T shirts. They were always more expensive. This one appears to be a good quality item.
Throw caution to the wind! Wear this amazing shirt and shorts. Hopefully, these are sleep-wear. Loud design and mixed up fonts are not that relaxing though...
Another Sweatshirt, although you can't tell from the photo. This one has the famous Sonic the Hedgehog 3 game art on it. This was a promotional item for the game, of course. It was supposed to be available as some sort of bonus for pre-ordering the game. It's also said that it could be won as a prize at a later date.
Sonic & Sega Sports pajamas. This has a chain-link-fence pattern background, and features Sonic stock art re-done to make it look like he is doing various sporting activities like track, baseball, skateboarding and basket ball.
Sonic the Hedgehog Scrubs. These are shirts for Doctors and Nurses to wear on the job. Pediatrics often encourage cute cartoon character designs to help kids. The designs show Sonic & tails with health related items such as tooth brushes and thermometers. This is very rare, because it is a trade item (used only for medical professions) for grownups, who generally do not recognize the collectibility of character items.
This is a nice shirt detail from a gray short sleeve.
The shorts have a pavement-like texture with 'watermarked' "Sonic" word. Credit on the photos goes to "Tede-Bear", although the photos are only fragments. (originals lost)
Street Hog short sleeve with more skate boarding Sonic. Note: they have dressed the stock art in...something. Is that a vest? A life jacket? The slogan is attempting to be graffiti style.