Travel with both an infant carseat and a toddler carseat. Attach both carseats to the Babyzen Yoyo
1) Attach the infant carseat with infant carseat adaptor. Make sure to get the carseat that fits.
2) carry the toddler carseat while still being able to utilize the stroller is using Think King hooks. Make sure you get a pack of two. It is super easy to hang your carseat on and to take it off for security, gate check, or use. It might hit the legs of the stroller pusher while walking, but nothing that impedes use. See Post.
To Purchase Infant carseat adaptor
To Purchase Toddler Carseat, or Toddler Carseat 2
To Purchase the Think King hooks.