I have a serious love for my down vest. I got it as a Christmas present years and years ago and it is from Gap.I have gotten so much wear out of it. I tried looking on the Gap website to find something similar but I've had no luck. Gap has changed a lot in the past 10 years and doesn't offer a lot of quality/classic pieces any longer. However, down vests in general are perfect for the month of October. (I've also considered taking mine to the monogrammers to get monogrammed, however, I just haven't gotten around to it... It will happen eventually though because you can never have enough monograms).
The vest on the left is RL kids. If you can fit into RL kids, this is a great option. Navy is a great neutral and the patch makes it unique. The boys section of RL also has a great down vest offered in a bevy of colors. The sizes run pretty large, I usually wear a size small or size 2/4 and a size 14 in RL boys is plenty big.
The two vests to the right of the RL vest are J. Crew's Excursion Quilted Vest. Usually I find J. Crews prices to be overpriced for most items and usually only shop J. Crew sale, however, at the original price of $98, this is a really great price. Most down vests are priced over $100. Don't think you are limited to only be dressed down when you are wearing a down vest. The middle outfit is a great example of ways you can wear your vest when dressed up.
This down vest from RL Men's is another great option. A little harder to match with a lot because it is patterned and has a lot going on and definitely a little more pricier than many options; however, it is unique and definitely classic.
If you are looking for other brands to purchase a down vest, check out: Barbour, Patagonia, Mountain Hardware, The North Face, Penfield, Columbia, etc. Most outdoor brands carry a nice down vest. How do you wear your down vest? Have a fabulous day!