There's not really winter blankets for a baby carriage. If the children are bigger, I think Winter cozy impractical because the kids always want to get off and.
For this reason, I sewed a stroller blanket that is at the top of a belt with a buckle to secure the blanket to the stroller. By a rubber band at the bottom of the ceiling, they can be a footmuff contract that protects against wind and cold.
The ceiling is the inside of a soft teddy. As a deposit, I used a thermal fleece as protection against the cold. The outside is a patchwork with an image I have the felted and embroidered then.
PS: In short, there is the stroller blanket a step by step instructions.