The twins' grandma insists on outfitting them in identical outfits, which they're no longer that crazy about; fortunately, this year she gave them the reversible Marmot Girls' Gemini Fleece Jacket, so they can sport different looks at the bus stop. One side of the hoody features a sporty plaid fleece that is also weather resistant for damp days, while the other features a soft, silky Raschel fleece. Which could cause problems, since they might tussle over who gets to wear that super-soft fleece against her skin.
The Gemini is a reversible fleece jacket backed by a light weight nylon shell. Because of the nylon shell I would say it is warmer and more wind resistant than a standard fleece, but if you're looking for something for really cold weather, I'd recommend the Marmot Girls Guides Down Hoody.