1-OF-1 COLLECTOR’S GRAIL: UNRELEASED SUPREME x RAINS DENMARK PROTOTYPE JACKET

Up for sale is an incredibly rare, authentic Supreme piece that never made it to retail storefronts. This jacket was produced during the R&D/Look-See phase for a rumored 2017 collaboration with Danish rainwear brand RAINS.

Item Details:
* Brand: Supreme / RAINS (Denmark)
* Size: XL (Fits true to size, standard Supreme outerwear layering fit)
* Condition: Sample Condition (Please see photos for precise condition; reference look-see prototype status)
* Hardware: Genuine premium YKK waterproof zippers.

Authentication & Proof Features:
The authenticity of this prototype is verified through its highly specific, dual-branded internal production tags:
1. The Material: Features RAINS’ signature matte-finish 50% Polyurethane / 50% Polyester waterproof blend.
2. The Importer Tag: Features the official Japanese internal care label explicitly showing "MANUFACTURED BY RAINS" paired alongside Supreme’s historical official Japanese distribution partner: 有限会社ワングラム (Onegram Co., Ltd.) and their verified registry contact number (03-5770-8510).
3. The Neck Tag: Features the premium matte, rubberized Supreme XL neck label utilize for high-end technical outerwear.

Because this is a true pre-production layout mockup intended for boardroom/design evaluation rather than mass commercial release, it does not feature a standard commercial retail serialization code or handwritten tracking text.