Technical flat drawn to scale from the size chart.
SD-108
SDA's relaxed taper: comfortable through the seat, narrowing cleanly below the knee.
For a 32″ waist (our default: enter yours). Size 31’s waistband measures 32¼″, ¼″ over your waist. That’s within normal measuring variation, so it should sit right at your waist once it’s broken in.
- Maker’s fit name
- Relaxed Tapered
- Fabric
- 15oz selvedge
- Weight
- 15 oz
- Maker
- Osaka
- Shrinkage & finish
- One wash 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
- strong
- Opening
- medium
| TAG | 30 | 31 | 32 | 33 | 34 | 36 | 38 |
|---|---|---|---|---|---|---|---|
| Waist | 31½ | 32¼ | 33⅛ | 34¼ | 35⅜ | 37 | 38⅝ |
| Front rise | 10⅜ | 10⅜ | 10⅝ | 10⅞ | 11 | 11¼ | 11⅜ |
| Back rise | 14⅛ | 14¾ | 15 | 15⅛ | 15⅛ | 15½ | 15½ |
| Thigh | 11⅜ | 11¾ | 12 | 12 | 12¼ | 13 | 13¼ |
| Knee | 8½ | 8½ | 8⅝ | 8⅞ | 9¼ | 9½ | 9⅞ |
| Leg opening | 6⅞ | 7⅛ | 7¼ | 7¼ | 7½ | 7⅞ | 8½ |
| Inseam | 33¼ | 33¼ | 33¼ | 33¼ | 33¼ | 33¼ | 33¼ |
Inches; thigh, knee and opening are measured flat. Transcribed from Okayama Denim (published in centimetres). Retailers measure differently; confirm with the seller before you buy.
Compare with another model
The Iron Heart IH-633S is longer in the leg (+2¾″), wider at the opening (+⅜″), higher in the rise (+⅜″) and fuller at the knee (+¼″). Relaxed Tapered vs Tapered.
How the IH-633S would fit
- A wider opening that sits easily over boots and stacks less.
- Longer in the leg: more to cuff or stack.
| SD-108size 31 | IH-633Ssize 32 | Diff. | |
|---|---|---|---|
| Waist | 32¼ | 32 | −¼″ |
| Front rise | 10⅜ | 10¾ | +⅜″ |
| Back rise | 14¾ | 14¾ | same |
| Thigh | 11¾ | 11¾ | ±0 |
| Knee | 8½ | 8¾ | +¼″ |
| Leg opening | 7⅛ | 7½ | +⅜″ |
| Inseam | 33¼ | 36 | +2¾″ |
Diff. is the IH-633S minus the SD-108. Clear
Compare with jeans you own
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Cut close to the SD-108
The nearest matches by rise, thigh, knee and opening at size 31, from any maker.
546
細Slim Straight- Rise
- 10½″
- Thigh
- 11¾″
- Knee
- 8¼″
- Hem
- 7″
J301
絞Tapered- Rise
- 10⅝″
- Thigh
- 12″
- Knee
- 8½″
- Hem
- 6⅞″
IH-633S
絞Tapered- Rise
- 10¾″
- Thigh
- 11¾″
- Knee
- 8¾″
- Hem
- 7½″
XX-013
鋭Slim Tapered- Rise
- 10⅞″
- Thigh
- 12¼″
- Knee
- 8¼″
- Hem
- 7⅛″