Pokémon Shirts, a collaboration between Pokémon and the online custom shirt brand Original Stitch, is now selling bandanas, which you can make by freely combining Pokémon patterns. It will be available for purchase from November 20th, 2020 at 14:00. The bandana is available in 151 Pokémon pattern designs from "Pocket Monsters Red and Green". It is recommended as a fashion item to accentuate your outfit, but also as a handkerchief! Prices start at 1,800 yen (excluding tax) and shipping costs are not included. Images from the bandana line have been added to an Imageboard thread.

How to buy a bandana!
(1) Visit the official website of the "Pokémon Shirt" and go to the "Bandana" page!
(2) Choose and order your favorite design from the "Bandana" page!

Source: https://www.pokemon.co.jp/goods/2020/11/201120_da02.html

Pokémon the Movie: Coco Shirts

To commemorate the release of Pokémon the Movie: Coco, four Pokémon shirt patterns featuring: Zarude, Alternate Colored Celebi, Hoshigarisu, and Uu will become available. You can combine the patterns of these four Pokémon and existing ones by customizing a shirt. Be sure to go to see the movie with your Pokémon shirts this winter! The shirts will be on sale from 2:00 p.m. on Friday, November 20th, 2020 until 23:59 p.m. on Sunday, February 28th, 2021. The Pokémon patterns commemorating the release of Pokémon the Movie: Coco may be re-released after the sales period. Images from the shirt line have been added to an Imageboard thread.

Hoshigarisu and Yokubarisu Mask Promotion

Starting on November 20th, 2020 at 14:00, a campaign where patrons can get a mask in which they can pretend to be Hoshigarisu or Yokubarisu will be given to those who have ordered a shirt or polo shirt at the Pokémon Shirt store. Order one shirt and you'll get a Hoshigarisu mask, or order two shirts together and you'll get a Hoshigarisu and a Yokubarisu mask, for a total of two masks from this set. The present campaign is on a first-come, first-served basis and will end when all items are gone.

Source: https://www.pokemon.co.jp/goods/2020/11/201120_da01.html