MM6 Maison Margiela x Salomon XT-4 Mule 'Spectrum Blue Gradient' (L47540200) — Deconstructivist Collab Mule

What Is the MM6 Maison Margiela x Salomon XT-4 Mule ‘Spectrum Blue Gradient’?

The MM6 Maison Margiela x Salomon XT-4 Mule ‘Spectrum Blue Gradient’ (Style Code: L47540200) is the most chromatically ambitious piece in the MM6 x Salomon collaboration — a shoe that takes the partnership’s already radical deconstructivist mule construction (removing the heel counter from Salomon’s XT-4 trail platform entirely) and pairs it with a gradient colorway that moves through the full spectrum of blue in a single continuous wash, from deep midnight at one end to pale sky at the other. It is the only gradient colorway in today’s full Salomon lineup — a technique that operates on fundamentally different visual logic from the panel-separated multi-tone colorways of every other shoe in the range. At $159, it is $10 below the other MM6 x Salomon XT-4 Mule colorway (‘Black/Nine Iron’, $169) while sharing the same radical mule construction and the same Salomon technical components, making it the more accessible entry into the XT-4 Mule platform. Style L47540200. Unisex, US M4–M11 / W5–W12 / EU 36–45.

Quick Facts

• Brand: MM6 Maison Margiela x Salomon
• Silhouette: XT-4 Mule — backless mule reinterpretation of Salomon’s XT-4 trail platform
• Style Code: L47540200
• Colorway: Spectrum Blue Gradient — continuous blue gradient, midnight to sky
• Outsole: Contagrip — Salomon multi-surface rubber compound
• Lacing: Quicklace — Salomon single-pull forefoot lacing
• Construction: Backless mule — open heel, full forefoot structure retained from XT-4
• Edition: MM6 Maison Margiela x Salomon Limited Edition Collaboration
• Gender: Unisex
• Sizing: US M4–M11 / W5–W12 / EU 36–45
• Price: $159
• Category: Designer Collaboration / Conceptual Footwear / Collector
• Fit: True to size for most secure forefoot hold; mule construction has open heel

Specs & Construction

The Gradient Colorway — A Different Visual Logic

Every other multi-tone colorway in today’s Salomon lineup operates on the same fundamental visual principle: distinct color zones separated by panel boundaries. The XT-4 OG’s White/Ebony uses the contrast between two discrete tones to define every panel edge. The XT-6’s Coyote Brown/Safari/Sahara Sun distributes three earth tones across distinct upper panels. Even the atmospheric White/Lunar Rock/Night Sky reads as three separable zones. The Spectrum Blue Gradient works on an entirely different principle: there are no panel boundaries that separate one color from another. Instead, the color transitions continuously across the upper in a single unbroken wash — from deep, saturated midnight blue at its darkest point through mid-range cobalt and royal blue tones to the pale, desaturated blue of a clear sky at its lightest. The upper panels are still present as structural elements, but the gradient passes across them without interruption, treating the shoe’s surface as a single chromatic canvas rather than a set of discrete color fields. This is what makes the Spectrum Blue Gradient the most visually distinctive colorway in today’s full lineup: not the blue itself (blue is a common sneaker color direction), but the gradient technique applied to the XT-4 Mule’s already unconventional form.

The Blue Spectrum — What the Gradient Covers

The gradient does not span an arbitrary range of blues: it moves through the full emotional and atmospheric register of the color, from the heaviest and most nocturnal expression to the lightest and most aerial. Midnight blue — where the gradient is deepest — is the blue of a sky with no artificial light, the specific dark, high-saturation blue that sits at the boundary between blue and navy without fully becoming either. Dense, gravitational, and deeply saturated. Moving through the gradient: cobalt and royal blue tones that represent blue at its most direct and fully chromatic — the blue that most people mean when they say blue, without atmospheric modification. Continuing lighter: cerulean and sky blue tones, the blues of the upper atmosphere and clear daytime sky, desaturating as the light increases. At the palest point of the gradient: the specific very-light blue of high-altitude sky, where blue is barely present but unmistakably the source. The full gradient from midnight to sky covers the entire emotional range of the color — from weight and depth to lightness and openness — in a single object. The shoe reads differently depending on which section of the gradient the eye settles on: it can look dark and grounded, mid-tone and direct, or light and atmospheric, all within the same object.

Two XT-4 Mule Colorways — Two Opposite Approaches

Same radical mule platform, two opposite colorway philosophies. Spectrum Blue Gradient at $159: color-led, gradient technique, expressive, more accessible. Black/Nine Iron at $169: tonal, architectural, restrained. The decision is entirely about which relationship to color you prefer in your most conceptually ambitious shoe.

The XT-4 Mule Construction — Context for New Buyers

The XT-4 Mule is the most structurally radical piece in the MM6 x Salomon collaboration. By removing the heel counter entirely from Salomon’s XT-4 trail running platform, MM6 Maison Margiela applies its deconstructivist methodology in the most literal way: asking what is structurally necessary, and removing what is not. The shoe’s Quicklace system handles all forefoot retention; the Contagrip outsole provides the same trail-grade grip as any XT platform; the upper paneling is fully intact. What is absent is the heel enclosure — and in its absence, the shoe becomes something that cannot be categorized as a trail shoe, a fashion sneaker, or a mule in the conventional sense, but functions as all three simultaneously. Size true to your normal Salomon size for the most secure forefoot fit; the open heel means the Quicklace forefoot system carries the full fitting responsibility.

Sizing — Unisex Conversion Table (Men’s / Women’s / EU)

This shoe uses men’s / unisex sizing. Women typically size down 1 size from their women’s US size (e.g., women’s US 8 → men’s US 7 / EU 40). True to size. Do not size down — the open-heel mule construction means the Quicklace forefoot system carries the full fitting responsibility.

Who Is the MM6 x Salomon XT-4 Mule ‘Spectrum Blue Gradient’ For?

Three profiles: the chromatic ambition buyer who wants the collaboration’s most visually expressive and technically distinctive colorway — the Spectrum Blue Gradient is the only gradient colorway in today’s full Salomon lineup and the only one that treats the shoe’s surface as a single chromatic canvas rather than a set of discrete color zones; the XT-4 Mule buyer on a considered budget who wants the most radical and structurally unconventional piece in the MM6 x Salomon range at the more accessible of the two Mule price points ($159 vs $169 for the Black/Nine Iron) — same platform, same construction, same Salomon technical components, $10 less; and the blue collector who wants a specific, authored, and culturally grounded blue sneaker — the Spectrum Blue Gradient is not a generic ‘blue shoe’ but a colorway with a specific design logic (the full spectrum, midnight to sky, as a single continuous wash) applied to the most conceptually radical silhouette in today’s lineup.

Frequently Asked Questions

Q: What is the style code for the MM6 x Salomon XT-4 Mule ‘Spectrum Blue Gradient’?
A: The style code is L47540200.

Q: How does the gradient work on this shoe?
A: The Spectrum Blue Gradient is a continuous color wash — unlike panel-separated multi-tone colorways, the blue transitions uninterrupted across the upper’s surface from deep midnight at its darkest to pale sky at its lightest, crossing panel boundaries rather than stopping at them. The result is a shoe whose color reads differently depending on which section the eye focuses on.

Q: How does this compare to the XT-4 Mule ‘Black/Nine Iron’?
A: Same radical backless mule construction, opposite colorway philosophy. Spectrum Blue Gradient ($159): continuous gradient, chromatic and expressive. Black/Nine Iron ($169): two-tone industrial near-monochrome, architectural and restrained. Spectrum Blue Gradient is $10 more accessible.

Q: What is the XT-4 Mule and how does it wear?
A: The XT-4 Mule is a backless mule reinterpretation of Salomon’s XT-4 trail platform — the heel counter has been removed entirely by MM6 Maison Margiela as a structural deconstruction. It can be worn as a slip-on. The Quicklace forefoot system provides all the retention. Size true to your normal Salomon size; do not size down, as there is no rear structure to compensate.

Q: Is this true to size?
A: Yes — size true to your normal Salomon size. Do not size down. Women should size down approximately 1 size from their women’s US size (e.g., women’s US 8 → men’s US 7 / EU 40).