Baseball Jersey Size Chart
Official MLB baseball jersey sizing guide. Find your perfect fit for Nike Authentic and Replica jerseys with our comprehensive measurement chart.
⚾Quick Answer
MLB jerseys use numerical sizing (40, 44, 48, etc.) for Authentic jerseys and standard S-3XL for Replica jerseys. Size 44 (Medium) fits a 38.5-41 inch chest. Authentic jerseys have an athletic cut.
MLB Authentic Jersey Measurements
| Numeric Size | Standard Size | Chest (body) |
|---|---|---|
| 40 | S | 35.5-38.5" |
| 44 | M | 38.5-41" |
| 48 | L | 41-44" |
| 52 | XL | 44-48.5" |
| 56 | 2XL | 48.5-53.5" |
| 60 | 3XL | 53.5-58" |
Note: Measurements are body measurements in inches. Authentic jerseys use numerical sizing. Replica jerseys use standard S-3XL sizing with similar chest measurements.
Frequently Asked Questions
What's the difference between MLB Authentic and Replica jerseys?
Authentic jerseys are exact replicas of what players wear on field, with an athletic cut, premium materials, and embroidered details. Replica jerseys are designed for fans with a more relaxed fit, screen-printed graphics, and a lower price point.
Do MLB jerseys run big or small?
Authentic MLB jerseys have an athletic cut and run true to size. Replica jerseys have a more relaxed fit and may run slightly larger. Most people order their normal t-shirt size for both styles.
Should I get a button-up or pullover baseball jersey?
Button-up jerseys (authentic style) are what players wear on field and offer a classic baseball look. Pullover jerseys are more casual and easier to wear over clothing. Both use the same sizing, so choose based on your style preference.
Understanding MLB Baseball Jersey Sizing
MLB baseball jerseys come in two main types: Authentic and Replica. Understanding the differences between these styles and how they fit is essential to choosing the right size. Nike manufactures official MLB jerseys, and their sizing is consistent across teams.
MLB Authentic Jerseys
Authentic jerseys are designed to match what players wear on the field. They feature a button-up front, athletic cut, and premium materials with moisture-wicking technology. Authentic jerseys use numerical sizing (40, 44, 48, 52, 56, 60) where the number roughly corresponds to chest measurement. The fit is tailored for athletic performance, sitting closer to the body than replica jerseys.
MLB Replica Jerseys
Replica jerseys are designed for everyday fans who want team apparel at a more affordable price. They use standard S-3XL sizing and have a more relaxed, comfortable fit. Replica jerseys feature screen-printed graphics instead of embroidered details and are available in both button-up and pullover styles. The sizing is more forgiving than Authentic jerseys, making them ideal for casual wear.
Sizing Recommendations
- Authentic Jersey: Order your normal t-shirt size for an athletic fit.
- Replica Jersey: Order your normal size for a comfortable, relaxed fit.
- Layering: If wearing over hoodies or multiple layers, size up one size.
- Women: MLB jerseys use men's sizing. Women may want to size down for a better fit.
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