My daughter put her 2 guinea pigs in here and they love all the extra space.  We did have them in a cage from the pet store we got them from and it was much too small.  One of the pigs likes to hide under the ramps that are in the partition, so it doubles as a hideout, too!  It is a little time consuming to undo all the straps to take it out to clean it, but all the space is worth it.  We would also like it if the bottom was solid and we could have put it on a table, but we just put it on the floor and it works fine.