AMZSPORTWomen's Running Jacket Long Sleeve Gym Sports Hoodie with Zip Side Pocket

What size would fit size 12?

Would this jacket be fine for running in cold/icy winter?

Got this already in a size 14. now i want to order a grey one but they are not available. can the seller tell me when it will be in stock again? thank

Difference between black and black 8003-3?