[JR Central] NANGA creates a "serious" Doctor Yellow sleeping bag. The first collaboration between JR Central and NANGA is born.
JR Central and NANGA are launching a crowdfunding project for a collaborative sleeping bag inspired by the Doctor Yellow T4 fleet. Developed with NANGA's specialized technology, the campaign runs from May 19 to June 30.
📋 Article Processing Timeline
- 📰 Published: May 20, 2026 at 00:00
- 🔍 Collected: May 19, 2026 at 15:32
- 🤖 AI Analyzed: May 20, 2026 at 08:51 (17h 19m after Collected)
Central Japan Railway Company (JR Central) and NANGA Inc. have announced their first-ever collaboration: a project to produce the 'Doctor Yellow SLEEPING BAG' through crowdfunding.
Maibara City in Shiga Prefecture, where NANGA is headquartered, lies along the tracks once served by the Doctor Yellow (T4 fleet), which retired in January last year. Having spent over 30 years in this region crafting high-quality down products capable of enduring harsh conditions, the manufacturer has applied its unwavering passion and refined technical expertise to bring this project to life.
1. Project Overview
The official JR Central x NANGA 'Doctor Yellow SLEEPING BAG' project is a pre-sale via crowdfunding, with production confirmed upon reaching the target funding goal.
Campaign Period: May 19, 2026 (Tue) 15:00 – June 30, 2026 (Tue) 23:59
Target Goal: 3,500,000 yen
Format: All or Nothing
Operator: NANGA Inc.
URL: https://market.jr-central.co.jp/shop/crowd_funding/project.aspx?project=nanga
2. Support Plans
① Standard Plan: 77,000 yen (tax included)
② Early Bird Plan (10% OFF): 69,300 yen (tax included) *Limited to 30 units
③ Early Bird Plan (5% OFF): 73,150 yen (tax included) *Limited to 40 units
④ Factory Tour Included Plan: 88,000 yen (tax included) *Limited to 3 units
3. Shipping Schedule
First 100 units: Scheduled for mid-November 2026
Up to 400 units: Expected shipping between summer and autumn 2027
4. What it means for NANGA to make it "seriously"
From the day they decided to make the Doctor Yellow sleeping bag, NANGA's factory underwent dozens of trials. To replicate that vibrant yellow color such that it wouldn't fade even in harsh outdoor environments, the two companies held repeated meetings and refined the samples.
Specifications:
- Fabric: Surface: 40dn Nylon (AURORA-TEX®), Back: 15dn Ripstop Nylon
- Construction: Trapezoidal box quilt structure
- Down: Spanish Duck 90/10 (760FP)
- Down weight: 600g
- Comfort temperature: -4°C to -11°C (4-season support)
- Total weight: Approx. 1,170g
- Size: Regular (Suitable for heights up to 178cm)
About NANGA
Founded in 1941 in Maibara City, Shiga Prefecture, as Yokota Sewing. For over 30 years, NANGA has been manufacturing down sleeping bags in its domestic factory that can be entrusted with lives in extreme cold.
Maibara City in Shiga Prefecture, where NANGA is headquartered, lies along the tracks once served by the Doctor Yellow (T4 fleet), which retired in January last year. Having spent over 30 years in this region crafting high-quality down products capable of enduring harsh conditions, the manufacturer has applied its unwavering passion and refined technical expertise to bring this project to life.
1. Project Overview
The official JR Central x NANGA 'Doctor Yellow SLEEPING BAG' project is a pre-sale via crowdfunding, with production confirmed upon reaching the target funding goal.
Campaign Period: May 19, 2026 (Tue) 15:00 – June 30, 2026 (Tue) 23:59
Target Goal: 3,500,000 yen
Format: All or Nothing
Operator: NANGA Inc.
URL: https://market.jr-central.co.jp/shop/crowd_funding/project.aspx?project=nanga
2. Support Plans
① Standard Plan: 77,000 yen (tax included)
② Early Bird Plan (10% OFF): 69,300 yen (tax included) *Limited to 30 units
③ Early Bird Plan (5% OFF): 73,150 yen (tax included) *Limited to 40 units
④ Factory Tour Included Plan: 88,000 yen (tax included) *Limited to 3 units
3. Shipping Schedule
First 100 units: Scheduled for mid-November 2026
Up to 400 units: Expected shipping between summer and autumn 2027
4. What it means for NANGA to make it "seriously"
From the day they decided to make the Doctor Yellow sleeping bag, NANGA's factory underwent dozens of trials. To replicate that vibrant yellow color such that it wouldn't fade even in harsh outdoor environments, the two companies held repeated meetings and refined the samples.
Specifications:
- Fabric: Surface: 40dn Nylon (AURORA-TEX®), Back: 15dn Ripstop Nylon
- Construction: Trapezoidal box quilt structure
- Down: Spanish Duck 90/10 (760FP)
- Down weight: 600g
- Comfort temperature: -4°C to -11°C (4-season support)
- Total weight: Approx. 1,170g
- Size: Regular (Suitable for heights up to 178cm)
About NANGA
Founded in 1941 in Maibara City, Shiga Prefecture, as Yokota Sewing. For over 30 years, NANGA has been manufacturing down sleeping bags in its domestic factory that can be entrusted with lives in extreme cold.
FAQ
Where can I support the Doctor Yellow sleeping bag project?
You can support it through JR Central's dedicated crowdfunding page: https://market.jr-central.co.jp/shop/crowd_funding/project.aspx?project=nanga
What are the features of this sleeping bag?
It uses AURORA-TEX® for the shell, contains 600g of down, and is a 4-season model designed to withstand harsh outdoor environments.
Why was this project launched?
It was launched because Maibara City, where NANGA is headquartered, was along the route of the Doctor Yellow, and the two companies shared a passion for quality manufacturing.