Kinokuniya has launched a new bag called the "Mini Boston," made using ONIBEGIE, a material dyed with a substance extracted from onion skins.
The bag becomes available on the Kinokuniya official online store from August 12, 2026 (Wednesday), followed by in-store sales from August 13 (Thursday).
Mustard
Navy
Wine
Beige
August still carries the last of summer's heat, and on days spent in light outfits like T-shirts and dresses, a compact, easy-to-carry bag feels just right. The Mini Boston weighs approximately 149g and has a small, rounded silhouette. Despite its compact size, it has a well-defined gusset that comfortably fits a plastic bottle, making it practical for everyday outings.
Another highlight is the soft coloring that comes from its natural-dye origins. In summer, the color works as an accent against simple outfits, and as the season shifts, it blends naturally into autumn looks built around shirts and jackets.
About 149g and Compact, Yet Roomy Enough for Everyday Use
The bag measures approximately 14cm (H) x 23cm (W) x 14cm (D) and weighs about 149g.
Despite its small appearance, the roughly 14cm gusset gives it a three-dimensional shape that comfortably fits a plastic bottle.
It's an easy bag to bring along for shopping, lunch, or weekend outings when you want to keep your load light. In summer, it pairs well with breezy outfits like T-shirts and dresses; as the seasons change, it fits just as naturally with shirt- and jacket-based looks.
It's a bag that can be styled differently as the seasons change.
The Soft Coloring of ONIBEGIE, Made From Onion Skins
The body of the bag is made from ONIBEGIE, a material that makes it possible to dye synthetic fiber using natural pigments.
The dye is based on quercetin extracted from onion skins, blended with other natural pigments in an original formula. The result is a soft coloring distinctive to natural dyes.
Four Colors That Work as a Summer Accent or an Autumn Staple
The bag comes in four colors: Wine, Mustard, Beige, and Navy.
The soft, natural-dye tones take on a different look depending on what they're paired with.
In summer, the bag's color adds a subtle accent to simple outfits like T-shirts and dresses.
In autumn, it blends naturally into calmer outfits built around shirts and jackets.
Mustard adds an accent to any look, Wine brings depth, Beige blends easily with most outfits, and Navy offers a chic touch — four colors to choose from depending on personal taste or the day's outfit.
Folded Like Origami From a Single Piece of Fabric
The bag's distinctive shape comes from a clever construction: a single piece of fabric is folded like origami into a three-dimensional Boston-bag form with a gusset. The result has a soft, rounded volume while still looking neat overall — a simple design that makes the most of the material's supple texture and the soft coloring of its natural dye.
Product Details
Product Name: Kinokuniya Mini Boston
Colors: Wine, Mustard, Beige, Navy
Price: ¥4,950 (tax included) each
Size: Approx. 14cm (H) x 23cm (W) x 14cm (D)
Handle Length: Approx. 32cm
Material: 100% nylon
- Body: ONIBEGIE
- Webbing: 83% recycled polyester + 17% regular polyester
- Zipper tape: recycled polyester
Release: Kinokuniya official online store — from 8:00 PM on August 12, 2026 (Wednesday); in stores — rolling release starting August 13, 2026 (Thursday)
Available At: Kinokuniya International (Aoyama), Kamakura, JR Kyoto Isetan, Iwataya Main Store, 神戸さんちか店, CIAL Yokohama, Nihombashi Takashimaya S.C., Shibuya Scramble Square, ecute Tachikawa, ecute Ueno, and 調進所 紀ノ國屋京町家
This is a limited-quantity item, and sales will end once stock is gone. In-store stock levels vary daily, so please check with individual stores directly for availability.
Online Store: https://www.super-kinokuniya.jp/c/releases/26su-miniboston
