Excellent for hideaway cats!
My Ragdoll just loves being enclosed in draught-free environments (to give you an idea, this long-haired Madame likes to cuddle under blankets. Including the winter duvet). It's large enough to accommodate big breeds and yet airy enough not to seem like they are squished in there. Prevents a lot of draughts, so they stay nice and warm and helps them to feel safe. The only problem with it is not the bed, but my other cat, who finds leaping on top of it when Madame is having a snooze inside to be excellent fun. Madame does not share his amusement...