# item.guide

Men's Clothing

Clothing Sizes · 7 specs

Direct Answer

Men's apparel sizing standardizes tops (XS to 3XL), pants and jeans (Waist × Inseam with US-to-EU conversions), tailored dress shirts (neck circumference and 3-point sleeve measurement), and suit jackets featuring the traditional Drop 6 tailoring rule.

Source: ASTM D6960 / ISO 3635 / International Tailoring Guilds · Last reviewed Aug 28, 2026

Specs

Governing Standards ASTM D6960 / ISO 3635 / EN 13402
Tops Sizing Range XS (34" chest) to 3XL (52" chest)
Pants & Jeans Format Waist × Inseam (e.g., 32W × 32L)
US to EU Pants Conversion EU Pants Size = US Waist (inches) + 16 (e.g., 32W = EU 48)
Dress Shirt Sizing Collar Circumference (14.5"–18.5") × Sleeve Length (32"–37")
Suit Jacket Drop 6 Rule Trouser Waist = Suit Jacket Size–6 inches (e.g., 40R jacket = 34W pants)
Suit Length Categories Short (≤5'7"), Regular (5'8"–5'11"), Long (6'0"–6'3"), XL (>6'3")

Men's Tops & Shirts Sizing Matrix

Alpha Size Chest (Inches) Chest (cm) Neck (Inches) Neck (cm) Waist (Inches) Waist (cm)
XS 33"–35" 84–89 cm 13.5"–14.0" 34–36 cm 27"–29" 68–74 cm
S 36"–38" 91–97 cm 14.0"–14.5" 36–37 cm 30"–31" 76–79 cm
M 39"–41" 99–104 cm 15.0"–15.5" 38–39 cm 32"–34" 81–86 cm
L 42"–44" 107–112 cm 16.0"–16.5" 41–42 cm 35"–37" 89–94 cm
XL 45"–47" 114–119 cm 17.0"–17.5" 43–44 cm 38"–40" 96–102 cm
XXL (2XL) 48"–50" 122–127 cm 18.0"–18.5" 46–47 cm 41"–43" 104–109 cm
3XL 51"–53" 130–135 cm 19.0"–19.5" 48–50 cm 44"–46" 112–117 cm

Men's Pants & Jeans Sizing (US vs EU)

US Waist (Inches) EU Pants Size Italy (IT) UK / AU Natural Waist (cm) Standard Inseams
28W EU 44 IT 44 UK 28 71–74 cm Short (30" / 76 cm)
30W EU 46 IT 46 UK 30 76–79 cm Regular (32" / 81 cm)
32W EU 48 IT 48 UK 32 81–84 cm Regular (32" / 81 cm)
34W EU 50 IT 50 UK 34 86–89 cm Long (34" / 86 cm)
36W EU 52 IT 52 UK 36 91–94 cm Long (34" / 86 cm)
38W EU 54 IT 54 UK 38 96–99 cm Extra Long (36" / 91 cm)
40W EU 56 IT 56 UK 40 101–104 cm Extra Long (36" / 91 cm)

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