Spring is a weird time for running outdoors. One day it's so warm all you need is a tank top and shorts, other days it's so frigid it's almost too cold to even consider anything other than a treadmill. I have a long history of running outdoors in the spring--it began in high school when I was a long distance runner on my track team. I grew up in Michigan's Upper Penninsula (a.k.a. basically Canada) and when track season began there was always still plenty of snow on the ground. We got used to training in layers that could be stripped off as we got warmer.
After my last collaboration with Brooks, they contacted me and asked if I would be interested in reviewing a head-to-toe outfit of theirs. How could I say no? I asked if they'd like to collaborate on a post featuring spring running gear and they were happy to provide me a full outfit--one I picked out myself of course.