Z-Digital Sovereign Onyx — 01 Front

01 Front · studio photograph

The design story

Z-Digital Sovereign Onyx — an onyx mesh-and-leather high-top with a mudcloth quarter tile and gold zip run. The Z-Glide Wheel System™ is fitted: lock the wheels flush with the sole to walk, or deploy them below the sole to roll, with Z-Beam™ lighting at the toe. Bogolan mudcloth is placed as a considered construction detail, never as surface print, and the aged-gold Z-Closure™ hardware signs the shoe.

Five cyber-technical house shoes from the approved Z-Digital™ board. Each pair carries the Z-Glide Wheel System™ — lock the wheels flush to walk, deploy them to roll, and light the step with Z-Beam™.

Materials & craft

Upper
Technical mesh and house leather upper, woven Bogolan mudcloth construction panel, Bogolan mudcloth lacing, Z-Glide™ retractable wheel chassis with Lock / Walk / Roll collar, Z-Beam™ toe lighting module, aged-gold Z-Closure™ hardware. Z-Air™ Onyx Cut (ZA-2159) on the Z-Air™ cushioned EVA chassis, banded terrace steps rising from forefoot to heel, squared architectural last with a chiselled toe box, stack 18 mm heel / 16 mm forefoot, 2 mm drop, laced in narrow Bogolan ribbon lace with a hand-knotted stopper, diamond Z at the lateral wall, Z-VIBE at the medial wall
Sole
Z-Air™ Onyx Cut (ZA-2159) on the Z-Air™ cushioned EVA chassis, banded terrace steps rising from forefoot to heel, squared architectural last with a chiselled toe box, stack 18 mm heel / 16 mm forefoot, 2 mm drop, laced in narrow Bogolan ribbon lace with a hand-knotted stopper, diamond Z at the lateral wall, Z-VIBE at the medial wall
Heritage
Hand-printed Bogolan mudcloth facing, narrow Bogolan ribbon lace with a hand-knotted stopper — Global Heritage Fusion™.

Fit guidance

True to size through the forefoot with a snug collar that softens after a few wears.

Width
Standard D width, ankle collar padded for support without pressure.
Last
squared architectural last with a chiselled toe box
Stack
18 mm heel / 16 mm forefoot, 2 mm drop
Break-in
A few wears for the collar to settle.
Socks
Sized over a standard performance sock.
Lacing
narrow Bogolan ribbon lace with a hand-knotted stopper Re-lace from the throat up for a locked midfoot.
Z-Glide™ wheels
Fit is measured with the wheels retracted flush to the sole. Deployed, the stack rises a few millimetres — no size change required.

Wearable specs

Z-Air™ Onyx Cut · ZA-2159

Wheel lock range

14mm

3 collar positions · 4 wheels

Collar travels 14 mm across three detented positions — lock, walk and roll — each held by the carbon-composite pin.

Sole clearance · flush vs drop

  • LockFlush · 6 mm

    Wheels retracted level with the outsole and pinned — pure walking geometry.

  • WalkFlush · 6 mm

    Wheels stay level, brake damper released for a soft glide through toe-off.

  • RollDropped · 20 mm (+14 drop)

    Axles descend 14 mm, lifting the shoe onto free-spinning hubs.

Stack · 18 mm heel / 16 mm forefoot, 2 mm drop

Z-Beam™ lighting modes

Off
Lighting module dormant. The lens reads as a brushed aged-gold inlay at the toe.
Running light
A low ivory running light traces the toe cap — presence, not glare.
Headlight
Twin forward headlights throw a warm beam ahead of the step for night streets.
Turn signal
Amber side pulse at the quarter panel, the pedestrian's indicator.

Laces · narrow Bogolan ribbon lace with a hand-knotted stopper

Chassis, hubs and heel cell are carried inside the midsole cavity so the shoe still reads as ready-to-wear.

Z-Glide Wheel System™ is a house design specification shown for review. Figures describe the intended engineering, not a certified production part.

Z-Sole Architecture™

Z-Air™ Onyx Cutunit ZA-2159

Cut for this style alone — no other shoe in the house carries this sole.

Chassis
Z-Air™ cushioned EVA — long-day rebound under a light shell
Tread cut
banded terrace steps rising from forefoot to heel
Last
squared architectural last with a chiselled toe box
Stack
18 mm heel / 16 mm forefoot, 2 mm drop
Laces
narrow Bogolan ribbon lace with a hand-knotted stopper
Side signature
Diamond Z medallion, aged gold, set into the lateral wall. Z-VIBE wordmark, tonal debossed, along the medial wall.

Reference specification for design review — not a manufacturing document.

Z-Glide Wheel System™

4 wheels · lockable · Z-Beam™

Twin retractable axles, forefoot and heel, recessed into the midsole cavity.

Guided demonstration · wheel collar

Step 1 of 3

Step 1 · Lock

You do
Press the heel collar down until it clicks.
Chassis
Both axles retract into the midsole cavity and the collar pin engages.
Underfoot
A firm, quiet outsole — the shoe behaves as a walking sneaker with no wheel travel.

Wheels fully retracted into the chassis, level with the bottom of the sole. The collar is pinned — the shoe walks like any luxury sneaker.

Collar pinned · wheels immobilised · wheel drop 0 mm

Z-Beam™ lighting

A low ivory running light traces the toe cap — presence, not glare.

Heel-cell battery with step-harvest trickle charge · USB-C service port under the medial collar

  • · Aged-gold anodised wheel hubs
  • · Polyurethane 62A treads
  • · Carbon-composite retraction collar
  • · Woven Bogolan mudcloth chassis facing

Z-Glide Wheel System™ is a house design specification shown for review. Figures describe the intended engineering, not a certified production part.

Compare this sole with another shoe

Story behind the design

The Bogolan story

Sirablen mudcloth in indigo & ivory, worked into the crop neck band, left cuff, right cuff.

indigo & ivory

ZB-SIRA-IND-320

  • crop neck band
  • left cuff
  • right cuff
  • front placket

The cloth

Bogolanfini begins as cotton mudcloth backed with a fine leather skiver so it can take a lace and a lasting pull. It is dyed with a n'gallama leaf bath, then river-mud fermentation over three passes — the pattern is not printed on, it is drawn in mud and then the ground around it is lifted away. On this piece the mudcloth meets technical mesh and house leather upper, woven bogolan mudcloth construction panel, bogolan mudcloth lacing, z-glide™ retractable wheel chassis with lock / walk / roll collar, z-beam™ toe lighting module, aged-gold z-closure™ hardware. z-air™ onyx cut (za-2159) on the z-air™ cushioned eva chassis, banded terrace steps rising from forefoot to heel, squared architectural last with a chiselled toe box, stack 18 mm heel / 16 mm forefoot, 2 mm drop, laced in narrow bogolan ribbon lace with a hand-knotted stopper, diamond z at the lateral wall, z-vibe at the medial wall.

The motif — Sirablen

The tape carries a broken line stepping across the ground cloth. In the Bamana reading, Sirablen is the road home — steadiness on a long journey. Z-Vibe keeps the motif at heritage scale rather than shrinking it into a logo pattern, so the hand of the maker stays legible on the finished shoe.

Why it sits where it sits

Mudcloth is placed on construction points, never scattered as decoration: crop neck band, left cuff, right cuff, front placket. These are the lines the eye already follows on this silhouette, so the cloth reads as structure — an edge, a facing, a seam — and holds its meaning at three metres and at arm's length alike.

The hand-work

Each length is block-matched panel to panel — the atelier discards any length where the repeat cannot be aligned. Tape width and motif repeat are cut to the size band, so a petite run and an extended run carry the same proportion rather than the same measurement.

Global Heritage Fusion™

African heritage, global luxury, future design: the mudcloth is set against European finishing and the aged-gold Z-Closure™ mark. Nothing is erased on either side — the meeting is the design. Different Roots. One Human Story.

Care · Cold hand-wash or specialist clean only. Mud dye deepens with age; never bleach, and dry flat away from direct sun.

Refinement provenance

Z-Studio refined · 1/7 views shot

Each step below reflects work that actually exists for this piece. Refinement is a design process — it does not imply the piece is production-released.

  1. Owner-approved design board intakeComplete

    The signed design board was registered as the source of truth; silhouette, Bogolan placement and hardware were locked from it.

  2. Z-Sole Architecture™ assignmentComplete

    Sole identity resolved for this style — Z-Air™ Onyx Cut (ZA-2159) on the Z-Air™ cushioned EVA chassis, banded terrace steps rising from forefoot to heel, squared architectural last with a chiselled toe box, stack 18 mm heel / 16 mm forefoot, 2 mm drop, laced in narrow Bogolan ribbon lace with a hand-knotted stopper, diamond Z at the lateral wall, Z-VIBE at the medial wall. Tread, last and stack height were made unique to the shoe rather than shared across the register.

  3. Bogolan signature verificationComplete

    Mudcloth was confirmed as a construction detail (laces, panel, tongue or heel band) and not surface print, and the aged-gold Z-Closure™ mark was placed.

  4. Z-Glide™ wheel & Z-Beam™ lighting integrationComplete

    The retractable wheel housing and lock/unlock travel were fitted into the sole stack, with the forward beam module set into the toe box.

  5. Z-Studio 4K refinement passComplete

    Studio refinement rebuilt the shoe at 4K: cleaner last geometry, corrected proportions and true material rendering on the released angles.

  6. Seven-view studio captureIn progress

    1 of 7 angles are distinct photographs; 02 Left, 03 Right, 04 Back, 05 Interior, 06 Inner tags, 07 Fabric detail still read the design board.

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