I recently upgraded to a larger bed, so I'm trying to find a new home for my beloved twin-sized egg crate. This pad made my dorm-issue mattress SO much more comfortable. My dorm mattress was giving me back pain, but this egg crate magically made it go away. Here's a description of the pad: http://www.vitalitymedical.com/val-med-convoluted-foam-hospital-bed-pad.html I always used it with a cover, so it is in good condition (though the blue-green color of the foam has faded in places).

I originally bought the pad for $28 plus shipping, but its yours for $10!

NB: After I moved out of the dorms I used this pad in a house with a dog. The dog was never allowed on my bed, but if you have a dog allergy you probably shouldn't risk it.