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    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

    LetterHeightJacket lengthSleeve adjust
    S (Short)5'5-5'8−1.5" from R−1"
    R (Regular)5'8-6'1StandardStandard
    L (Long)6'1-6'4+1.5"+1.5"
    XL (Extra Long)6'4++3"+3"

    40 Chest Across Lengths

    SizeChestJacket lengthSleeve
    40S40"30"24"
    40R40"31.5"25"
    40L40"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.