Onsen Stack | No. 341Unisex Pullover Hoodie

The definitive heavyweight layer. Build 3719 is engineered for thermal retention and structural isolation. Designed as an uncompromising spatial barrier, it provides a dense, continuous line that anchors the daily rotation. It does not merely drape; it encompasses, providing substantial physical weight without sacrificing minimalist geometry.

The architecture of this garment demands absolute shape retention. It features rigorous side-seamed construction, structured ribbed cuffs, and a calibrated spatial volume designed to maintain its rigid form through continuous seasonal wear. The exterior plane provides a flawless, consistent surface for our visual discipline, ensuring the artifact remains a permanent fixture of your uniform.

Material Architecture: Solid artifacts are forged from a dense 52/48 integration of Airlume combed, ring-spun cotton and structural poly-fleece. Heather variants shift to a deliberate 60/40 ratio to achieve their specific visual frequency. Operating at a heavy 6.5 oz./yd.² (220.4 g/m²), the interior fleece provides a highly effective thermal boundary while maintaining a stark, refined exterior finish.

Assembled across our global fabrication network under strict ethical and environmental protocols, ensuring every artifact meets the ichinichi standard before it is commissioned for your wardrobe.

We reject the bloated cycle of mass retail. Every ichinichi artifact is engineered with absolute intent, meaning your garment does not exist until the exact moment it is commissioned.

By operating on a strict, on-demand fabrication model, we eliminate the physical waste and environmental friction of the fashion industry. This process requires a deliberate 3–4 day lead time before shipping. It is a slower, uncompromising system designed to ensure structural perfection and zero excess inventory. Your piece is not pulled from a static stockpile; it is forged strictly for your daily rotation.

The ichinichi discipline is a universal architecture. We commission and deliver artifacts globally, providing complimentary transit on all orders, regardless of destination.

To maintain our strict zero-waste philosophy and eliminate unnecessary carbon friction, we operate a decentralized fabrication network with localized hubs across the US, EU, UK, and Japan. Your garment is engineered at the facility closest to your coordinates. Following the deliberate 2–5 day fabrication period, please allow 3–6 days for localized transit. Global deployment times vary by region, but every piece is routed with absolute efficiency.