Gentlemen's Collective

We have put together this guide to walk you through each measurement. It should take around 10 minutes — a flexible tape measure and a friend to help will make it straightforward.

Upper Body

1  —  Length +

Measure from the base of the collar at the back of your neck, straight down the spine, to where you want the jacket to finish.

Tip: A classic jacket length finishes around the curve of the seat.
2  —  Shoulders +

Measure straight across the back from the bony edge of one shoulder to the bony edge of the other, following the natural shoulder line.

Tip: Have a friend take this — it cannot be done accurately on yourself.
3  —  Chest Circumference +

Measure around the fullest part of your chest, with the tape under your arms and flat across your shoulder blades. Keep it horizontal.

Tip: Keep your arms relaxed at your sides and breathe normally.
4  —  Stomach Bust +

Measure around the fullest part of your midsection / stomach, keeping the tape horizontal all the way around.

Tip: Do not suck in — stand naturally.
5  —  Sleeve Length +

With your arm slightly bent, measure from the edge of your shoulder, down the outside of the arm, to the wrist bone.

Tip: Measure the arm you write with.
6  —  Bicep Circumference +

Measure around the fullest part of your upper arm, with the arm relaxed at your side.

Tip: Do not flex.
7  —  Wrist Circumference +

Measure around your wrist bone, where a watch would sit.

Tip: Keep the tape snug, not tight.

Lower Body

1  —  Trouser Length +

Measured on the OUTSIDE of the leg — from the top of the waistband straight down the outer seam to where you want the trouser to finish at the ankle.

Tip: Use a pair of trousers you already like for reference.
2  —  Waist +

Measure around your waist where you actually wear your trousers — this may be higher or lower than your natural waist.

Tip: Measure over a light shirt, not over a belt.
3  —  Hip Circumference +

Measure around the fullest part of your hips and seat, keeping the tape horizontal.

Tip: Stand with your feet together.
4  —  Thigh Circumference +

Measure around the fullest part of your thigh, just below where it meets the body.

Tip: Keep the tape snug but not tight.
5  —  Full Crotch Rise +

Measured from the front of the waistband, down through the crotch, and back up to the waistband at the back — the full U-shape.

Tip: Easiest measured while seated on a firm chair, or taken from a well-fitting pair of trousers laid flat.
6  —  Hamstring Circumference +

Measure around the back of your upper leg at the fullest part of the hamstring.

Tip: Keep the tape horizontal.
7  —  Calf Circumference +

Measure around the fullest part of your calf.

Tip: Stand naturally with weight evenly distributed.

General Tips

  • Use a flexible fabric tape measure — a rigid measuring tape will give inaccurate results.
  • Measure over a light shirt or fitted underlayer, never over a heavy jacket or coat.
  • Have a friend take the measurements where possible, especially shoulder width and back length.
  • Stand naturally — do not adjust your posture, suck in, or puff out.
  • If between sizes, always note both measurements.

Upper Body

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Lower Body

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Something went wrong — please email your measurements to onboarding@rjmtm.com directly.

Not sure about a measurement? Switch to the How to Measure tab above.

Measurements Received


Thank you James — here is what we have on file. You can edit and resubmit any time before we begin.

Upper Body
MeasurementValue
Lower Body
MeasurementValue

Three cloths from the Super 120s collection — each rendered as a finished suit so you can see how they wear. All are outstanding in this weight range.

Dark Brown Shadow Stripe suit render
210060-2028 fabric swatch
210060-2028 Dark Brown — Shadow Stripe
98% Wool (S120) | 2% Lycra  ·  Pure Wool 2 View fabric
Grey Glen Check suit render
233696-9921 fabric swatch
233696-9921 Grey — Glen Check
100% Wool (S120)  ·  Pure Wool 2 View fabric
Light Navy Shadow Stripe suit render
210060-2022 fabric swatch
210060-2022 Light Navy — Shadow Stripe
98% Wool (S120) | 2% Lycra  ·  Pure Wool 2 View fabric
Reply to Frank's email with the fabric code of your choice — e.g. 210060-2028