If you are on a tight budget, this Mod-o-doc Open Cardigan will fit the bill. It's a popular choice, while not very expensive. Another good option is this Open Cardigan. While the price is not too high, be sure that this piece will become a wonderful addition to your wardrobe. You might also want to consider this Leo & Nicole Open Cardigan. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.