Technical flat drawn to scale from the size chart. Knee not published; drawn as an estimate.
RNB-1433
A plain zip-fly straight leg in 14oz selvedge, easy through the thigh.
For a 32″ waist (our default: enter yours). Size 31’s waistband measures 31½″, ½″ under your waist: a firm break-in. Expect it to feel tight for the first week or two while the waistband gives most of its inch, then it settles close to your waist.
- Maker’s fit name
- Straight
- Fabric
- 14oz selvedge
- Weight
- 14 oz
- Maker
- Kojima, Okayama
- Shrinkage & finish
- One-washed; some further shrinkage possible Hemming and cuffing guide
Order size 31 for a 32″ waist, and check the seller’s own chart before you buy. Menjitsu may earn a commission when you buy through these links. It never changes your price or which jeans we chart.
Measured profile
at size 31- Rise
- low
- Thigh
- regular
- Taper
- gentle
- Opening
- medium
| TAG | 30 | 31 | 32 | 33 | 34 | 36 | 38 | 40 | 42 |
|---|---|---|---|---|---|---|---|---|---|
| Waist | 29½ | 31½ | 32⅝ | 33⅛ | 33⅞ | 36⅝ | 38¼ | 39¾ | 42⅛ |
| Front rise | 10¼ | 10¼ | 11 | 11 | 11⅜ | 11⅜ | 11⅜ | 11¾ | 11¾ |
| Back rise | — | — | — | — | — | — | — | — | — |
| Thigh | 12¼ | 12¼ | 12⅝ | 12⅝ | 13 | 13⅜ | 14⅛ | 14⅝ | 15 |
| Knee | — | — | — | — | — | — | — | — | — |
| Leg opening | 8¼ | 8¼ | 8¼ | 8¼ | 8⅝ | 8⅝ | 8⅝ | 9 | 9½ |
| Inseam | 34¼ | 33⅞ | 33⅞ | 33⅞ | 33⅞ | 33⅞ | 33⅞ | 34¼ | 34¼ |
Inches; thigh, knee and opening are measured flat. Transcribed from Kojima Genes (published in centimetres). Retailers measure differently; confirm with the seller before you buy.
Compare with another model
The Iron Heart IH-634S is longer in the leg (+1⅛″), bigger in the waist (+½″), narrower at the opening (−¼″) and higher in the rise (+¼″). Both are Straight cuts.
How the IH-634S would fit
- Longer in the leg: more to cuff or stack.
| RNB-1433size 31 | IH-634Ssize 31 | Diff. | |
|---|---|---|---|
| Waist | 31½ | 32 | +½″ |
| Front rise | 10¼ | 10½ | +¼″ |
| Back rise | — | 14¾ | – |
| Thigh | 12¼ | 12¼ | same |
| Knee | — | 8¾ | – |
| Leg opening | 8¼ | 8 | −¼″ |
| Inseam | 33⅞ | 35 | +1⅛″ |
Diff. is the IH-634S minus the RNB-1433. Clear
Compare with jeans you own
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Cut close to the RNB-1433
The nearest matches by rise, thigh, knee and opening at size 31, from any maker.
FN-8005
直Straight- Rise
- 10¾″
- Thigh
- 12¾″
- Knee
- —
- Hem
- 8¾″
IH-634S
直Straight- Rise
- 10½″
- Thigh
- 12¼″
- Knee
- 8¾″
- Hem
- 8″
S500AX
直Straight- Rise
- 10½″
- Thigh
- 12½″
- Knee
- 9″
- Hem
- 8¼″
S0510XX-II
直Straight- Rise
- 10⅞″
- Thigh
- 12¼″
- Knee
- —
- Hem
- 8⅜″