Flexispot bS12 pro office chair review. Are you looking to upgrade your office chair and don't know which one to choose? I totally understand you. With so many options available, deciding when shopping for an ergonomic office chair is hard. But I'm here to share a complete review of Flexispot bs12 Pro, and hopefully, by the end of this post, you will decide if is ideal for you or not. This review includes detailed pictures and videos to showcase every feature this office chair is designed with. So pay close attention!