We live in Oregon. The fall, winter and spring is cold, wet and unpredictable! My son wore these all three seasons. With the adjustable straps, they grow with him. The flannel lining kept him warm! he fell into a mud puddle once. I went and changed him; his skin wasn't even wet because of the these bibs!
These overalls are almost what you'd expect from Carhartt. They're warm, the fabric is durable, and are mostly well-made. We got more use out of these than regular pants because the adjustable shoulder straps could "grow" with our son. The big downside to these is that the crotch snaps, don't stay snapped closed on their own. We found that the snaps came undone on our active toddler without much effort. Crawling, climbing, crouching, the snaps didn't hold. Our only solution was to sew the inseam closed.