I had a travel system for my last one and will use it again this time round. I have the car seat part which clicks into a base secured in the car, you can lift it from that and click it into the stroller, bubs had no idea how often he has been in and out of the car. It was invaluable especially for the school run, in the car for 5 mins, bubs drops off, then get to school and ifi'd had a normal car seat i'd have had to wake him up to get him out for the 5 mins it takes to get the others in school then home again to the same scenario. With the travel system i didn;t even have to lug the heavy capsule around, just clickit in the stroller and away we go.
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