So we have bought a Hauck sleep n play travel cot to use for our 3 month old baby as she has grown out of her Moses basket. The cot that is in her nursery is way too big to fit in our bedroom so we bought the travel cot. However we then saw online you can't use them for long periods of time which makes sense because of the mattress that comes with is very very thin and obviously not comfortable for them. We have just bought a proper cuggl cot mattress to go in the travel cot so this will now be suitable to use permanently right ???