United Airlines continues to implement much-needed equipment changes with its latest roll out of the much touted Polaris seats. The seats are a welcome feature of the carrier's recently acquired Boeing 777-300ER aircraft, which United has been purchasing and adding to select international routes. This latest change adds three daily routes where passengers can experience the comfortable Business Class seats.

Implementing the update has dragged somewhat thanks to difficulties with the seat's developer and manufacturer, Zodiac, but this latest announcement suggests that the problem is on its way to being solved. Three routes will be added to those covered by the superior 777-300ER aircraft: San Francisco (SFO) to Beijing (PEK), Newark (EWR) to Tokyo Narita (NRT), and SFO to Frankfurt (FRA).

The SFO/PEK route will come first, receiving its update on September 6, 2017, while the SFO/FRA route will come a month later, on October 6th. Passengers on the EWR/NRT route will have to wait until October 28 to try out the new cabin, although flight schedules may change.

The upgrade is a necessary improvement over the 747-400 used on the San Francisco routes, as well as the 777-200ER that handles the Newark to Tokyo flight. These flights will bring the total of routes serviced by the 777-300ER to seven, with further expansion expected in the future.

The Polaris seats are considered by many travelers to be the pinnacle that U.S. Business Class has to offer, but securing a chance to try them out may prove difficult for some. Still, the seat's purported ample leg room, relative privacy, and other perks make scoring one worth the effort.

Adam Luehrs is a contributing writer at GET.com based in California. He likes traveling to new and exciting destinations, preferably on his credit card company's dime. When not on the road, Adam enjoys hiking around the mountains of San Diego, trying out new food and reading history books. Email: adam.luehrs@get.com.