The best replacement for vests is jackets.

The best alternatives to vests are rated as following:
★★★★★  jackets
★★★★  sweater
★  sweaters
  chest rigs
  body armor

Your alternative for vests is not listed? Suggest!
Speaking about vests, one probably shouldn't forget about suits.

Other search terms related to vests and their ratings are:
★★★★★ suits
You have in mind a companion for vests and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of vests in all years. Click on graph for more.
vests
jackets
sweater