UNDYED
UNDYED / Lee Collaboration 91-B Zip-Up Denim Jacket
First introduced in 1929, Lee’s iconic zip-front denim jacket “91-B” returns in a special collaboration featuring UNDYED’s signature philosophy of natural, undyed comfort.
Lee became the first company in the world to add zippers to jeans in 1926, and the 91-B carried that innovative spirit forward as a groundbreaking workwear piece of its era.
Now regarded as a true vintage classic, the design is reimagined using UNDYED’s undyed fabric, giving it a softer presence that blends naturally into a wide range of styles and settings.
The single-layer original West Point fabric (100% cotton) has a weight comparable to a slightly heavier Oxford shirt, offering softness from the very first wear and making it ideal as a light outer layer during transitional seasons.
This special collaboration is recommended not only for vintage enthusiasts nostalgic for the 91-B, but also for those looking for a fresh alternative to the classic denim jacket.
kinari
kinari
UNDYED
UNDYED is a California-born brand focused on products made from undyed organic cotton. Created by Sally Fox, the brand utilizes her revived naturally colored organic cotton, offering garments that highlight the beauty of raw materials. Without the use of chemical dyes or bleaching agents, it produces pieces that embrace the fabric’s natural character.
A direct expression of the material’s quality
The fabric uses West Point twill, characterized by its subtle sheen and durable construction. Originally associated with uniforms worn at the United States Military Academy at West Point, it combines rugged strength with a refined appearance.
Crafted from unlined 100% cotton, it offers a soft feel from day one and can be easily thrown on during seasonal transitions.
The fabric has a weight similar to a slightly heavier Oxford shirt, striking a balance between light comfort and substantial structure.
Crafted without any dyeing process, this piece allows you to fully experience the natural color and texture of raw cotton. Each garment develops its own unique expression through the material’s rich, organic tones.
Small natural flecks from cotton leaves and stems may be visible in the fabric—proof that chemical treatment has been minimized to preserve the cotton’s original character.
Vintage-inspired detailing
Zip closures at the front placket and left chest pocket, along with the angled pocket design, faithfully recreate vintage 91-B detailing. The woven brand tab on the left chest is also placed in the same position as the original models.
Additional details such as cat's eye buttons, adjustable side tabs at the hem, and triple-stitched reinforcement at high-stress areas including the shoulders, yoke, sleeves, and underarms are all faithfully reproduced from vintage workwear construction.
Modern cropped silhouette with vintage character
The timeless cropped silhouette remains true to the original design. Softer and lighter than a traditional denim jacket, it offers an easy-to-wear feel that makes it perfect for everyday layering.
The natural color palette pairs effortlessly with denim, chinos, and military trousers alike, balancing vintage character with modern versatility.
SIZE
※Check out the size guide for more accurate measurements.
Staff comment
| ●Staff Height / Weight: 165cm / 64kg Wearing size: 2 Body type: Slim (narrow shoulders) Fit: Just right Length: Short Worn over a thick long-sleeve T-shirt, with slightly dropped shoulders and a comfortable amount of room in the body. Sleeve length reaches slightly past the fingers, and the length covers about one-third of the hips. The soft, slightly textured fabric gives a relaxed feel and makes it very easy to wear. |
| ●Staff Height / Weight: 171cm / 70kg Wearing size: 2 / 3 Body type: Standard Fit: Just right Length: Short Worn over a heavy-weight short-sleeve T-shirt. Size 2 fits more cleanly, while size 3 offers a more relaxed look with added room when worn loosely or fully zipped. Size 2: Slightly dropped shoulders, moderate room in the body, sleeves cover the back of the hand, and length reaches slightly over the hips. Size 3: Slightly dropped shoulders, generous room in the body, sleeves extend slightly past the fingers, and length covers about one-third of the hips. |
| ●Staff Height / Weight: 177cm / 73kg Wearing size: 3 Body type: Standard Fit: Just right Length: Short Worn over a mid-weight T-shirt, with a fit almost identical to the model. Slightly dropped shoulders and a comfortable amount of room in the body. Sleeve length barely misses covering the back of the hand, and the length reaches slightly over the hips. A lightweight piece that is easy to throw on, ideal for early spring and early autumn. |
| ●Staff Height / Weight: 181cm / 78kg Wearing size: 4 Body type: Athletic (broad shoulders) Fit: Just right Length: Short Worn over a mid-weight T-shirt with slightly dropped shoulders and a comfortable fit throughout the body. Sleeve length covers the back of the hand, and the length reaches slightly over the hips. The undyed weapon fabric adds versatility, making it easy to incorporate into a wide range of outfits. |
SPEC
| Materials | 100% cotton |
|---|---|
| Country of Origin | CHINA |
| Model Wearing | Wearing size 3(177cm/70kg) |
| Care Instructions | ※Please note that the colours may look different from the real thing depending on your monitor environment. |
| Weight | 660g |
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