Sizing decoded June 4, 2026 3 min read
What Does Short, Regular, Long Mean on Suit Jackets?
Letter = jacket length. Short = 5'5-5'8. Regular = 5'8-6'1. Long = 6'1-6'4. XL = 6'4+.
Length Letter Decoder
| Letter | Height | Jacket length | Sleeve adjust |
|---|---|---|---|
| S (Short) | 5'5-5'8 | −1.5" from R | −1" |
| R (Regular) | 5'8-6'1 | Standard | Standard |
| L (Long) | 6'1-6'4 | +1.5" | +1.5" |
| XL (Extra Long) | 6'4+ | +3" | +3" |
40 Chest Across Lengths
| Size | Chest | Jacket length | Sleeve |
|---|---|---|---|
| 40S | 40" | 30" | 24" |
| 40R | 40" | 31.5" | 25" |
| 40L | 40" | 33" | 26.5" |
FAQs
S, R, L on suits?
Jacket length. S = 5'5-5'8. R = 5'8-6'1. L = 6'1-6'4.
40S vs 40R vs 40L?
Same chest. Different jacket length and sleeve.
6'5+?
XL (Extra Long) or XLT.
Selling suits on Shopify?
Tailor Size Guide adds chest + length matching for suit listings.