Once Rebecca hit age 1, she was old enough to venture out in the bike trailer (the same Chariot which was rigged as a jogging stroller during the summer and fall).
This is Rebecca's first bike helmet (a requisite for being in the trailer). Even though babies can hold up their heads very early on in life, it isn't until they are at least 1 year of age that they can tolerate the weight of a helmet (and not risk any spinal damage etc).
Our weird green winter weather meant that Greg and Rebecca were actually able to go out biking.
Still, I am happy we finally got our snow.