The individual cat would be sheltered in their own chalet complete with a run and sleeping quarters. The entire cattery is centrally heated and insulated for the cold winter months, so your cat can have the warmth and comfort of home. In the summer months the insulating walls are removed, giving the cats an outside as well...
The doubles comprise a purpose built block of luxury pens, each with an insulated indoor chalet with its own heater. A cat flap leads to a large covered outside run, giving the cats an "inside" and an "outside". These pens can accommodate two to three cats (obviously from the same household).