We are releasing collaborative items between POTR and "doublet," a Japanese brand that develops real clothes centered on designs that bring humor and surprise to everyday life.

doublet is a brand created by designer Masayuki Ino. Like a word being transformed, it replaces parts of basic and standard items with unexpected ideas, transforming familiar objects into "everyday wear with a sense of incongruity." The brand offers a total range of items, from clothing to accessories.

For this collaboration, we created a bag that, like the double A-sides of old CDs with no filler tracks, has no back side; both sides are the main focus.
"The choice is not to stick to just one right answer. By not fixing the front and back, and by reversing the perspective, a new look is created. The orientation changes each time you carry it, and it resonates with your mood and outfit of the day. It's a bag that has two sides, giving you one more reason to go out," says Ino.
This special collection combines classic items from Yoshida&Co. with innovative ideas that are characteristic of doublet.

The bag has a design that combines a mini backpack and a duffel bag, and the backpack side uses an original jacquard fabric with POTR's monogram pattern.
To create a sense of unity in the design on both sides, the pink and khaki versions feature zipper tape colors that match the fabric color.
The interior of the bag features turquoise, a color that symbolizes POTR.
 

The backpack side features a zippered front pocket for storing small items such as wireless earphones and lip balm, while the duffel bag side has a snap-button pocket. When using the backpack side in front, the duffel bag's handles can be stored in the snap-button pocket.

It comes with two types of straps: an adjustable and detachable shoulder strap and a hand strap. You can switch them depending on whether you want the backpack side or the duffel bag side to be facing forward. In either case, it can be used in two ways: as a crossbody bag or carried by hand.

Release date: October 10, 2026 (Saturday)

Bags are available at the following stores: PORTER flagship store, PORTER (Shinjuku, Kobe), POTR (Ikebukuro, Nagoya, Namba, Sapporo), KURA CHIKA by PORTER (Fukuoka), KURA CHIKA by PORTER HONGKONG (K11 ART MALL), PORTER KOREA (YEOUIDO), PORTER BANGKOK, Yoshida&Co. official online store, and select doublet retailers.

Apparel stores: PORTER flagship store (Omotesando), PORTER KOREA (YEOUIDO), DOVER STREET MARKET GINZA, st company KIRYU, 10 Corso Como Seoul