The lightest double stroller on the market is the Combi Twin Savvy. It weighs only 18 lbs, and it's only 30 in wide so it will fit through all doors. I used this stroller and its the BEST!! It is great, fully reclines for each seat and each seat has it's own sun protector. I wouldn't recommend the Kolkraft for such a little baby. It really is a true umbrella stroller, with no badding, and only has one recline position, not enough for a little one to sleep comfortably IMO. Also, I found this stroller to be VERY flimsy, since mine got bent before we could even use it, rendering it almost useless. Luckily my DSis and I had bought it only for that trip, or one of us would have been extremely upset!!! The Combi folds up extremely small and even has a carrying strap to assist getting on/off the bus. Give it a look!!