Climbing Turtle on Tshirt

I always like understated tshirts. I’d have to be paid a lot of money to wear an I’m with Stupid t-shirt, but here’s one that I think I could get away with. It’s a picture of a turtle on a tshirt. The illusion is subtle, there is some shading on the shirt that looks like the turtle is trying to climb up the shirt.

That’s really all there is to this illusion. It’s not going to give you a headache or make you stare at it for awhile. But sometimes that’s the best kind of illusion. Just a simple addition to an already interesting concept. Without the fake wrinkles, this would have been just another tshirt. But because of the optical illusion, it made it super-cool!