Yes a two in one will just either let your child sit up or lay down a three in one normall does both the others as well as you can remove the seat part and put it in your car as a car seat, or you can postion your child to face either way, lots a makes and models do diffrent things , but it just means, you can only do two things with a two in one pram, and three things with a three in one pram x kitti x

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