At the top of this page there is a link (ad) to the On line marine store, they have plenty of both. I like Extrasport life vests due to large arm holes for easy movement, and any good ($100+) Majic Marine or other harness will work for you. But there are so many different makes, models, styles, etc. of each, you will hear many different opinions.

https://store.catsailor.com/pc/viewCategories.asp?idCategory=273