Pros: warm and cosy, easy to put into the carrier, easy to use
Cons: sold separately
I use this in the carrier during the winter in Sweden. This pad transforms the carrier from OK to very cosy. I start the heater at home, before going outside, before going to a cold car, and she seems very content with having a warm place to stay. I think this pad is a very good thing to have the times you have been at the vet and have a cat that had surgery or given sedatives. It will help the cat to keep the warmth. I also think it would be good for older cats, for kittens ad for the breeds that have no or little fur.
It is very easy to use, there´s a hole in the carrier for the cord, and the pad can stay in the bag when you´re not using it- the chord is protected from chewing on. It feels liter giving your pet a luxury place to stay.