Joie Aire carrycot or newborn cocoon?

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Does anybody know of any carrycots or cocoons that fit the Joie aire twin? I'm assuming carrycots won't fit due to the design of handlebar but perhaps a cocoon? Does anybody have experience of using with newborn and small toddler? We bought a maxi cosi double and it's been terrible, far too heavy and won't fit in boot but were kindly gifted a joie aire twin which I planned on using when baby was older but it rides much better than maxi cosi so would like to use now but just wanted something more secure and cosy to put newborn in and cannot seem to find anything on Joie website.