Go with the green, it's fantastic and come with grey pants, Great color coordination. It's made out of track material, which I think will be fine for the little tike (it's a gift for my nephew) ... but we'll see...I think 100% cotton would have been better, but I don't know kids that well...I just know it's cute and will look great on him.
When I saw this outfit I just had to have it for my baby boy. Its great quality fabric, will keep him warm during the winter as it is almost like a sweatshirt on the inside of the pants and the jacket. Price was right, shipping was quick, would buy from the seller again and recommend to my friends and family.