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NBA Jersey Size Guide: Complete Sizing Charts for Nike, Mitchell & Ness, and Adidas

Find your perfect NBA jersey size with our complete size charts for Nike Swingman, Nike Authentic, Mitchell & Ness, and Adidas jerseys. Includes measurement tables and fit tips.

Published: 2026-05-127 min read

Understanding NBA Jersey Sizing

NBA jersey sizing is not standardized across manufacturers or even across product lines from the same brand. A size Large in a Nike Swingman fits differently from a Large in a Nike Authentic, which fits differently from a Large in a Mitchell & Ness throwback. This guide breaks down every major jersey line so you can find your perfect fit without guesswork.

For a quick interactive lookup, try our Size Chart Tool which lets you filter by brand and body measurements.

Nike Swingman Jersey Sizing (2017-Present)

The Nike Swingman is the most popular NBA jersey on the market. It uses a relaxed, slightly oversized fit designed for casual wear rather than on-court performance.

Fit profile: Relaxed fit, slightly wider in the body, standard length

| Size | Chest (inches) | Length (inches) | Best For | |------|----------------|-----------------|----------| | S | 36-38 | 28 | Slim build, 5'5"-5'8" | | M | 38-40 | 29 | Average build, 5'8"-5'11" | | L | 42-44 | 30 | Athletic build, 5'11"-6'2" | | XL | 46-48 | 31 | Larger build, 6'0"-6'3" | | 2XL | 50-52 | 32 | Big and tall, 6'2"+ |

Sizing tips for Swingman:

  • Swingman jerseys run approximately one size larger than standard Nike apparel
  • If you wear a Nike Dri-FIT shirt in Medium, you will likely need a Small in Swingman
  • The armholes are cut wide for a basketball silhouette — this is intentional, not a sizing issue
  • For a fitted look over a t-shirt, go true to size. For a looser streetwear look, go one size up
  • Swingman jerseys have minimal stretch, so prioritize chest measurement over height

Nike Authentic Jersey Sizing (2017-Present)

The Nike Authentic (also called the "Vapor" or "AeroSwift" line) is the same cut NBA players wear on court. It uses a performance-oriented, tailored fit.

Fit profile: Slim, athletic cut with AeroSwift ventilation panels

| Size | Chest (inches) | Length (inches) | Best For | |------|----------------|-----------------|----------| | 40 | 37-39 | 30 | Slim build | | 44 | 41-43 | 31 | Average/athletic build | | 48 | 45-47 | 32 | Athletic/larger build | | 52 | 49-51 | 33 | Larger build | | 56 | 53-55 | 34 | Big and tall |

Sizing tips for Authentic:

  • Authentic jerseys use numeric sizing (40, 44, 48, etc.) rather than S/M/L
  • They run significantly slimmer than Swingman jerseys
  • The fabric has moderate stretch due to the AeroSwift knit construction
  • For display or collecting purposes, many buyers go one size up for comfort
  • A size 44 Authentic fits similarly to a Small or Medium Swingman
  • Authentic jerseys are noticeably longer than Swingman jerseys at the same equivalent size

Mitchell & Ness Hardwood Classics Sizing

Mitchell & Ness throwback jerseys use vintage-inspired sizing that differs significantly from modern Nike jerseys.

Fit profile: Traditional cut, slightly boxy, heavier fabric

| Size | Chest (inches) | Length (inches) | Best For | |------|----------------|-----------------|----------| | S | 36-38 | 27 | Slim build, shorter torso | | M | 40-42 | 28 | Average build | | L | 44-46 | 29 | Athletic build | | XL | 48-50 | 30 | Larger build | | 2XL | 52-54 | 31 | Big and tall |

Sizing tips for Mitchell & Ness:

  • M&N jerseys run true to size for a traditional basketball jersey fit
  • The heavier mesh fabric makes them feel more structured than Nike jerseys
  • They shrink slightly (about 0.5 inches) after first wash — consider this if you are between sizes
  • The Swingman line from M&N fits slightly slimmer than their Authentic line
  • For a modern fitted look, go true to size. For a vintage oversized look, go one size up

Adidas NBA Jersey Sizing (2006-2017)

If you are buying pre-2017 NBA jerseys, they will be Adidas. The two main lines were the Swingman (replica) and the Revolution 30 (authentic).

Adidas Swingman fit profile: Relaxed, generous cut

| Size | Chest (inches) | Length (inches) | |------|----------------|-----------------| | S | 36-38 | 29 | | M | 40-42 | 30 | | L | 44-46 | 31 | | XL | 48-50 | 32 | | 2XL | 52-54 | 33 |

Adidas Revolution 30 fit profile: Slim athletic cut, lighter fabric

| Size | Chest (inches) | Length (inches) | |------|----------------|-----------------| | S | 34-36 | 29 | | M | 38-40 | 30 | | L | 42-44 | 31 | | XL | 46-48 | 32 | | 2XL | 50-52 | 33 |

Sizing tips for Adidas:

  • Adidas Revolution 30 jerseys run approximately one size smaller than Adidas Swingman
  • If you wear a Large in Nike Swingman, you will likely need a Large or XL in Adidas Rev 30
  • Adidas jerseys tend to run slightly longer than equivalent Nike sizes
  • The Rev 30 fabric is more delicate — avoid sizing down too much as stretch-related wear occurs faster

How to Measure Yourself for a Jersey

To find your ideal size, take these measurements with a flexible tape measure:

  1. Chest: Measure around the fullest part of your chest, under your arms. Keep the tape level and snug but not tight.
  2. Torso length: Measure from the top of your shoulder down to your hip. Jerseys should fall near your hip for standard fit or mid-thigh for an oversized look.
  3. Consider layering: If you plan to wear the jersey over a hoodie or t-shirt, add 2-3 inches to your chest measurement.

Shrinkage and Care Considerations

All NBA jerseys will experience some shrinkage if not cared for properly:

  • Nike Swingman: Up to 1 inch in length if machine dried on high heat
  • Nike Authentic: Minimal shrinkage due to performance fabric, but avoid high heat
  • Mitchell & Ness: Can shrink 0.5-1 inch in both dimensions. Always air dry
  • Adidas: Moderate shrinkage potential. Cold wash and air dry recommended

For complete care instructions, see our Jersey Care and Preservation Guide.

Size Conversion: Swingman to Authentic

This table helps you cross-reference between Nike Swingman and Authentic sizing:

| Nike Swingman | Nike Authentic | Mitchell & Ness | |---------------|----------------|-----------------| | S | 40 | S | | M | 44 | M | | L | 48 | L-XL | | XL | 52 | XL-2XL | | 2XL | 56 | 2XL |

Note that these are approximate equivalents. The actual fit will differ between lines due to different cut profiles.

Frequently Asked Questions

Should I size up or size down for an NBA jersey?

It depends on the fit you want and the jersey line. For Nike Swingman jerseys, most people find their standard clothing size or one size down gives a good fit. For Nike Authentic jerseys, going true to size or one numeric size up provides the most comfortable fit for casual wear. For Mitchell & Ness, true to size works well for most builds.

Do NBA jerseys shrink in the wash?

Yes, all NBA jerseys can shrink if exposed to heat during washing or drying. Nike Swingman jerseys can lose up to 1 inch in length from machine drying. To prevent shrinkage, always wash in cold water and hang or lay flat to dry. See our detailed care guide for more tips.

What size NBA jersey does a 6-foot, 180-pound person wear?

For a 6-foot, 180-pound person with an average build, a Medium Nike Swingman or a size 44 Nike Authentic typically fits well. If you prefer a looser fit or plan to wear it over a t-shirt, go with a Large Swingman or size 48 Authentic.

Are youth NBA jersey sizes the same as adult small?

No. Youth XL is smaller than an adult Small across all brands. Youth XL typically fits a chest of 32-34 inches, while adult Small fits 36-38 inches. Youth jerseys are also proportionally shorter in length. If a teenager is between youth XL and adult Small, the adult Small with its longer length is usually the better choice.