As you can see below, One Piece: Stampede has a new fashion line going up which will sell exclusively at the Crunchyroll Store. There will be five pieces up for grabs with a hoodie, two long-sleeves shirts, and then two regular tees. The collection goes up on the Crunchyroll Store at October 17 at 12 pm EST, so the line should be up now!
If you want to browse the pieces, you can find them here. The hoodie looks cozy with its thick black fabric, and it has a graphic of Luffy printed on it. The rest of the shirts go with an earthy or dark color palate, but there is one which stands out. Tony Tony Chopper is on one of the short-sleeve shirts, and his piece is colored a bright aqua blue if you're looking for something vibrant.