My little ones play in the xpen during the day (I am home all day)... at night the 3 little ones sleep together in a 24 X 36 inch crate... pee pad in back of it... because my Jasmine jumps too high .... they are more protected that way at night and I don't have to worry about my husband stepping on them....
... they are all under 3 pounds.... 2 of them under 2 pounds...