If you're not planning on spending much, we recommend looking at this Theory Sport Coat. It's a fantastic piece for a reasonable price. Another strong contender for your wardrobe is this Theory Blazer. While the price of this piece is not too high, it will certainly attract a lot of attention.
If you're looking for a happy medium, we've got your back with this Theory Blazer Jacket. This item is bound to become a total wardrobe staple. You might also want to consider this Theory Bomber Jacket. It's an attractive option both price and quality-wise.
If you're looking at it like an investment piece, look at this Theory Jacket - a great luxury choice. Another product we're drooling over is this Theory Jacket. It's pricey but you get what you pay for.