I decided to buy this because one of my pigs enjoyed laying on the bedding in the corner of their cage. Ironically, my other piggy has taken over it instead. ( I have two pigs) She enjoys taking naps in it, just like a little puppy. Sometimes they like to fight about who gets to have it next. If you have baby guinea pigs, two will fit in it. http://i62.tinypic.com/4pz9ea.jpg
The funny thing is, instead of entering the "cozy cup" from the opening in the front, they climb in from the back.
Even after washing the cozy cup, it still keeps its shape. I will be buying more in the future.