Why use a t-shirt as a pillow-case, you ask? The reason is that it's a good idea to frequently change one's pillow case for hygiene reasons. However, one may not wish to own very many pillow-cases or wash pillow-cases too often. Using t-shirts provides most with an abundant supply of pillow-cases that can fit over most pillows.

Having a pillow that is shaped like a torso, would better accommodate a t-shirt. If the pillow were to have two stumps for the sleeves, and a brief neck for the collar, the t-shirt would fit much better.

Of course, any other anatomical approximations are obvious and expected. That said, as a side-effect, this Torso Pillow may help pacify a need for companionship.