Release 01A first look at Prototype 01Genève · CH
Maison Arc
Maison ArcRelease 01 / 2026
Release 01 · Size guide

A considered fit.
Room to move.

Two cuts, developed separately. Compare the measurements below with a similar garment laid flat.

Prototype 01

Women

A shaped performance top with a defined waist and curved two-layer shorts.

Performance topWomen · flat garment measurements · cm
MeasureSML
Chest widthTarget tolerance ±1 cm4446.549
Waist widthTarget tolerance ±0.8 cm39.54244.5
Body lengthTarget tolerance ±0.7 cm545556.5
Shoulder widthTarget tolerance ±0.7 cm36.537.538.5
Sleeve lengthTarget tolerance ±0.5 cm18.51919.5
How these measurements are taken
Chest width
Flat across the shirt, 2.5 cm below the armhole.
Waist width
Flat across the narrowest point of the shirt.
Body length
From the highest shoulder point beside the neck to the bottom hem.
Shoulder width
From one shoulder point to the other.
Sleeve length
From the shoulder seam to the sleeve edge.
Two-layer shortsWomen · flat garment measurements · cm
MeasureSML
Waist width · relaxedTarget tolerance ±1 cm323436
Waist width · stretchedTarget tolerance ±1.5 cm434547
Hip widthTarget tolerance ±1 cm4850.553
Outer side lengthTarget tolerance ±0.7 cm323334
Outer inseamTarget tolerance ±0.5 cm7.588.5
Liner inseamTarget tolerance ±0.5 cm10.51111.5
How these measurements are taken
Waist width · relaxed
Across the waistband with the elastic relaxed.
Waist width · stretched
Across the waistband at a comfortable stretch, not its maximum extension.
Hip width
Flat across the shorts, 18 cm below the top of the waistband.
Outer side length
From the top of the waistband to the outer short hem.
Outer inseam
From the crotch seam to the outer short hem along the inside leg.
Liner inseam
From the crotch seam to the inner liner hem along the inside leg.

Chest, waist and hip widths are measured across the garment, not around the body. The same sample targets apply to all five women's colorways.

Explore women
Prototype 01

Men

A straighter performance top with a clean silhouette and two-layer shorts.

Performance topMen · flat garment measurements · cm
MeasureSML
Chest widthTarget tolerance ±1 cm495255
Waist widthTarget tolerance ±1 cm464952
Body lengthTarget tolerance ±0.7 cm686970
Shoulder widthTarget tolerance ±0.7 cm434547
Sleeve lengthTarget tolerance ±0.5 cm21.22222.8
How these measurements are taken
Chest width
Flat across the shirt, 2.5 cm below the armhole.
Waist width
Flat across the narrowest point of the shirt.
Body length
From the highest shoulder point beside the neck to the bottom hem; front and back are equal.
Shoulder width
From one shoulder point to the other.
Sleeve length
From the shoulder seam to the sleeve edge.
Two-layer shortsMen · flat garment measurements · cm
MeasureSML
Waist width · relaxedTarget tolerance ±1 cm34.536.538.5
Waist width · stretchedTarget tolerance ±1.5 cm464850
Hip widthTarget tolerance ±1 cm515355
Outer side lengthTarget tolerance ±0.7 cm363738
Outer inseamTarget tolerance ±0.5 cm11.51212.5
Liner inseamTarget tolerance ±0.5 cm1414.515
How these measurements are taken
Waist width · relaxed
Across the waistband with the elastic relaxed.
Waist width · stretched
Across the waistband at a comfortable stretch, not its maximum extension.
Hip width
Flat across the shorts, 20 cm below the top of the waistband.
Outer side length
From the top of the waistband to the outer short hem.
Outer inseam
From the crotch seam to the outer short hem along the inside leg.
Liner inseam
From the crotch seam to the inner liner hem along the inside leg.

Chest, waist and hip widths are measured across the garment, not around the body. The same sample targets apply to all five men's colorways.

Explore men
A flat surface. A soft tape.

How to measure.

Choose a similar top or pair of shorts you already own. Lay it flat and smooth out folds without stretching the fabric.

  1. 01

    Measure across, not around

    Chest, waist and hip figures are one-side widths. Measure straight across the garment; do not compare these numbers directly with your body circumference.

  2. 02

    Start at the right point

    Top length begins at the highest shoulder point beside the neck. Shorts side length begins at the top of the waistband; inseams begin at the crotch seam.

  3. 03

    Keep relaxed and stretched separate

    First measure the waistband with the elastic relaxed. The stretched figure is a comfortable-stretch target, not a maximum stretch or a recommended body waist.