AirLight Jacket · KAPOK KNOT

KAPOK KNOT — From Japan to the World

¥50M+ crowdfunded. 10+ design awards. Loved in Japan —

Born from a tree nut.
Now going global.

¥50M+ Crowdfunded in Japan
10+ Design Awards
★ 4.6 Verified Reviews (Japan)

Kapok — a wild-growing tree-nut fiber — engineered in Tokyo into down-level warmth at just 500g.
Japan's material innovation brand now ships worldwide, for the first time.

✓ Just 500g — down-level warmth in a kapok-powered jacket you'll forget you're wearing.
✓ Kapok: a hollow-core plant fiber that absorbs moisture and generates heat — nature's lightest insulator.
✓ 100% cruelty-free & vegan-friendly. No feathers, no tree cutting — a sustainable brand from Japan changing fashion with plant innovation.
Get My AirLight Jacket →

$318 — 20% Launch Offer (reg. $398)

Code FOUNDERS20 applied automatically · First 100 orders only

Shop Men's → Shop Women's →
↓ See how it works
Ships Worldwide from Japan
Plant-Powered Kapok Fill
Japan Engineered
10+ Design Awards

Japan's Tree-Nut Fashion Brand — World Debut

A material revolution,
finally going global.

KAPOK KNOT was born from a singular obsession: replace down with something better. After ¥50M+ raised on crowdfunding, 10+ design awards, and a debut at Milano Unica — the world's leading fabric fair — we're bringing Japan's most innovative jacket to the world.

🏆 10+ Design Awards 🇯🇵 Japan Material Innovation 🌿 Milano Unica Exhibitor ⭐ Fumi Nikaido Collab 💴 ¥50M+ Crowdfunded
Kishow Fukai — Founder, KAPOK KNOT

Kishow Fukai — Founder, KAPOK KNOT

It Starts With a Tree
The Origin

It Starts With a Tree

Kapok grows wild across Southeast Asia. The fiber is harvested from the seed pods of the kapok tree — no cutting, no clearing. The more you harvest, the more the tree grows. Every jacket supports rural farming communities in Indonesia.

Nature's Lightest Insulation

Nature's Lightest Insulation

Kapok fiber has a hollow tube structure — 80% air by volume. That's what traps heat so efficiently. At 1/8 the weight of cotton, it's the lightest natural insulation on earth. And unlike down, it contains zero allergens.

1/8 Weight of Cotton
80% Air by Volume
0 Allergens
Japanese Engineering

5 Years. One Breakthrough.

Kapok fiber is too short to spin into thread — or so we were told. We spent five years working with Japan's leading textile engineers to solve this. The result: KapokFill™, a patent-pending insulation sheet that holds fiber without spinning it — 30% kapok blended with recycled fibers. Designed and engineered in Tokyo, Japan.

KapokFill™ insulation sheet

KapokFill™ insulation sheet

Craftsmanship at our partner factory

Craftsmanship at our partner factory

Heat Test

See the Warmth

Thermal camera test — 1 minute after wearing, at 3°C

See the Warmth

AirLight Jacket vs. Traditional Down — Same warmth. Zero animals.

Everything down promises.
Finally delivered.

Lighter Than a Sweater
ULTRALIGHT 01

Lighter Than a Sweater

Traditional down jackets weigh 800g–1kg. The AirLight Jacket weighs just 500g — the same as a water bottle. You'll forget you're wearing it.

500g vs 800–1000g for down
As Warm as Down. Proven.
DOWN-LEVEL WARMTH 02

As Warm as Down. Proven.

Thermographic testing at 3°C confirms identical heat retention to traditional down — just 1 minute after putting it on. Kapok's hollow fiber structure traps heat naturally.

3°C Test environment — matches down
100% Cruelty-Free. Zero Feathers. Ever.
100% CRUELTY-FREE 03

100% Cruelty-Free. Zero Feathers. Ever.

One down jacket uses feathers from ~30 birds. Ours uses zero. Vegan-friendly kapok fiber grows on trees and is harvested from seed pods — no cutting, no cruelty, no compromise.

0 Animals involved
Rain? No Problem.
ALL-WEATHER 04

Rain? No Problem.

Plant-based DWR coating delivers 20x the water resistance of a standard umbrella. Down collapses when wet and takes days to dry. The AirLight keeps performing — and washes easily at home.

20× Water resistance vs umbrella
Transparent from Field to You
FARM TO FASHION 05

Transparent from Field to You

Our founder personally visits the kapok farms, processing factories, and garment makers in Southeast Asia — cutting out middlemen to guarantee quality and fair pricing.

3 Direct partnerships
One Jacket. Autumn Through Spring.
3-SEASON VERSATILITY 06

One Jacket. Autumn Through Spring.

Built for cities like Sydney and Melbourne, where a 10°C morning turns into a 22°C afternoon. At just 500g, the AirLight layers over a tee in autumn, under a shell on cold winter days, and packs flat for spring trips — one jacket that earns its place three seasons a year.

3 Seasons of wear per year
97% Less CO₂ vs Down
30 Geese saved / jacket
80% Hollow fiber structure
1/8 Weight of cotton

*Based on life cycle analysis vs conventional goose down insulation.

Rated 4.6 by verified customers in Japan

★★★★★ 4.6 / 5 average — 40+ verified reviews on our Japan store (collected via Judge.me, translated from Japanese)
★★★★★

I finally found my animal-free jacket

I'd been searching for animal-free outerwear for so long — and I finally found it. Thank you to everyone who made this jacket.

Verified buyer, Japan · AirLight Jacket — Women
✓ Verified Purchase · Japan
★★★★★

Light, warm, and easy to live with

What surprised me first: it's so light yet properly warm, and wind barely gets through. My down jacket was too bulky for packed trains — the AirLight slips on and off easily. And in sudden rain it beaded water like a brand-new umbrella. (178cm / 78kg, size LL)

M. · Verified buyer, Japan
✓ Verified Purchase · Japan
★★★★★

Worth every yen

Lighter, warmer and better-looking than I imagined. I honestly think everyone should stop buying new real-down jackets and switch to kapok. I wear mine with confidence.

Verified buyer, Japan · AirLight Jacket — Women
✓ Verified Purchase · Japan
★★★★★

Warm without the stuffiness

As warm as down, but none of that sweaty feeling when you step indoors from the cold. And it's so light I kept checking whether I was actually wearing it.

Verified buyer, Japan · AirLight Jacket — Men
✓ Verified Purchase · Japan
★★★★★

Skeptical until I put it on

I saw it on TV and doubted something this thin could be warm — then I tried it. The cinchable waist and zip pockets are lovely details. I want to buy one for my parents in snow country.

Verified buyer, Japan · AirLight Jacket — Women
✓ Verified Purchase · Japan
★★★★★

Perfect for travel

Down is too hot on planes and trains, and heavy once you take it off. Light down was too cold. This jacket solved both — even cold gusts didn't get through.

Verified buyer, Japan · AirLight Jacket — Men
✓ Verified Purchase · Japan

How does it compare?

★ OUR PICK Down Synthetic
Weight ✅ ~500g ❌ 800–1000g ⚠️ ~700g
Warmth at 3°C ✅ Down-equivalent ✅ Excellent ⚠️ Good
Wet performance ✅ Maintains warmth ❌ Collapses when wet ⚠️ Varies
Machine washable ✅ Yes ❌ Dry-clean only ⚠️ Often yes
Vegan & cruelty-free ✅ 100% Cruelty-Free ❌ Bird feathers ⚠️ Petroleum-based
Sustainable origin ✅ Plant-powered (kapok + recycled fibers) ❌ Animal byproduct ❌ Fossil fuels
Designed & engineered in ✅ Tokyo, Japan — Various — Various
AirLight
Down
Synthetic
Weight
✅ ~500g
❌ 800–1000g
⚠️ ~700g
Warmth at 3°C
✅ Down-equivalent
✅ Excellent
⚠️ Good
Wet performance
✅ Maintains warmth
❌ Collapses when wet
⚠️ Varies
Machine washable
✅ Yes
❌ Dry-clean only
⚠️ Often yes
Vegan & cruelty-free
✅ 100% Cruelty-Free
❌ Bird feathers
⚠️ Petroleum-based
Sustainable origin
✅ Plant-powered (kapok + recycled fibers)
❌ Animal byproduct
❌ Fossil fuels
Designed & engineered in
✅ Tokyo, Japan
— Various
— Various
Recognition

10+ International Awards.

Recognized by governments, investors, and innovation bodies across Japan and the world — 10+ awards in total.

METI · JETRO — Shido Next Innovator 2019
🏆 Silicon Valley Selection — Grand Prize
Industry Co-Creation Summit 2021
🏆 Grand Prix (Crafted Catapult)
Nikkei Shimbun — Star Startup Japan 2021
🏆 Next-Generation Venture Award
Ministry of Environment — Startup Award 2021
🏆 Outstanding Startup
Claim Your Spot — $398 →

Global Launch Offer — 20% Off

Join the first 100 people
to own an AirLight Jacket.

First 100 orders get 20% off with code FOUNDERS20 (applied automatically) + free worldwide shipping. After that: $398 and standard shipping.

LAUNCH PRICE $318
Shop Now — 20% Off
✓ Ships worldwide from Japan ✓ Apple Pay · Google Pay · Shop Pay · PayPal ✓ Secure checkout
The Collection

Find your AirLight Jacket.

AirLight Jacket — Men AirLight Jacket — Men AirLight Jacket — Men AirLight Jacket — Men
Men's
AirLight Jacket — Men
$318 launch (reg. $398)
Color:
Size Guide → View Full Details →
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AirLight Jacket — Women AirLight Jacket — Women AirLight Jacket — Women AirLight Jacket — Women
Women's
AirLight Jacket — Women
$318 launch (reg. $398)
Color:
Size Guide → View Full Details →
✓ Added to cart! Proceed to Checkout →

Apple Pay · Google Pay · Shop Pay · PayPal accepted

AirLight Peplum Jacket AirLight Peplum Jacket AirLight Peplum Jacket AirLight Peplum Jacket
Women's — Peplum
AirLight Peplum Jacket
$318 launch (reg. $398)
Color:
Size:
Size Guide → View Full Details →
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Your questions, answered.

Thermographic testing at 3°C shows the AirLight Jacket reaches the same surface temperature as a traditional down jacket within 1 minute of wear. It's designed to cover you comfortably from around 0°C to 15°C depending on your activity level.

Kapok is a natural fiber harvested from the seed pods of the kapok tree, native to Southeast Asia. Unlike cotton, no tree cutting is required — the pods simply fall and the fluff is collected. The fiber is hollow, making it naturally lightweight and thermally efficient. KAPOK KNOT has developed a process to transform this fiber into a high-performance insulation sheet called EthicalDown Kapok™.

Yes. Unlike down jackets that require dry cleaning, the AirLight Jacket can be machine washed on a gentle, cold-water cycle. Kapok fiber does not clump or degrade with repeated washing.

Shipping: Free worldwide shipping on the first 100 launch orders (standard rate applies afterwards). Orders are dispatched from Japan within 3–5 business days; international delivery typically takes 7–14 days.

Returns: As a special launch-edition offer at 20% off, we are unable to accept change-of-mind returns on launch orders. If your item arrives faulty, damaged or not as described, we will replace or refund it at our cost — this always applies, including your rights under the Australian Consumer Law. Questions about sizing before you order? Email service@kapok-knot.com — we respond within 2 business days.

Depending on your country, customs duties and import taxes may be charged when your parcel arrives — these are set by your local customs authority and are not included in our prices. As a guide: the US applies duties on apparel imports, the EU applies VAT plus duty above €150, and Australia applies 10% GST. We mark all parcels accurately and are working to bring duty-inclusive checkout to our store.

The AirLight Jacket is designed with a relaxed, slightly oversized fit. If you prefer a fitted look, we recommend sizing down. Detailed size charts are available on the product page.

Yes, on multiple levels. Kapok requires no irrigation, no pesticides, and no tree cutting. Our founder personally maintains direct contracts with farms and processing facilities in Southeast Asia. Increased kapok demand also drives reforestation in the region.

AirLight Jacket

KAPOK KNOT

The jacket that changes
what warmth means.

¥50M+ Crowdfunded in Japan 10+ Design Awards Milano Unica Exhibitor ★ Fumi Nikaido Collab

Only 100 Global Launch Spots Available.

Shop Now →
✓ Secure checkout

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