This is the dental floss I use.

This is Wangta Smart Floss. It is comfortable to use thanks to the handle, and its comb-like shape allows it to floss evenly between teeth. It is sturdy, has a large capacity, and is affordable. It is highly portable, so you can use it anywhere. I was able to order it from Market Kurly. The pointed tip of the handle allows you to scrape and finish cleaning any areas you might have missed.