Bike trailer – have the croozer and it is brilliant. With the ‘baby sling’, you can easily take a six month old in in, and it is enclosed from the elements, so you can use it all year – we’ve used it in sub zero temperatures no problems. You could buy one today and use it this weekend. Lots of room for luggage too, things like nappies, shopping, snacks, picnics, spare clothes, raincots, toys, teddies, swimming stuff, it all just gets dumped in the back of the trailer. We’ve been camping with the tent and gear for the two of us in the back of the croozer even, that’s how big it is.
Bike seats mainly say from age 1, and in my one experience with a one year old in them i’d say that is probably about right.