
MLB Jersey Size Guide | UJerseyMLB
How to find your perfect fit
At ujerseymlb.com, we want you to be game-day ready with the perfect fit. Based on our customers' feedback and the athletic cut of our jerseys, we strongly recommend ordering one size up if you prefer a more comfortable, relaxed fit.
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Men's MLB Cool Base Jersey (Unit: inch)
| Size | Front Length | Back Length | Chest | Shoulder |
|---|---|---|---|---|
| S | 28.7 | 29.9 | 44 | 18.9 |
| M | 29.9 | 31.1 | 45.2 | 19.9 |
| L | 31.1 | 32.3 | 46.4 | 20.9 |
| XL | 32.3 | 33.5 | 47.6 | 21.9 |
| XXL | 33.5 | 34.7 | 48.8 | 22.9 |
| XXXL | 34.7 | 35.9 | 50 | 23.9 |
Women's MLB Jersey (Unit: inch)
| Size | Front Length | Back Length | Chest | Shoulder |
|---|---|---|---|---|
| S | 24.4 | 25.6 | 39.2 | 16.5 |
| M | 25.6 | 26.8 | 40.4 | 17.5 |
| L | 26.8 | 28 | 41.6 | 18.5 |
| XL | 28 | 29.2 | 42.8 | 19.5 |
| XXL | 29.2 | 30.4 | 44 | 20.5 |
Youth MLB Jersey (Unit: inch)
| Size | Front Length | Back Length | Chest | Shoulder |
|---|---|---|---|---|
| S | 24 | 25.6 | 34.6 | 15 |
| M | 25.2 | 26.8 | 35.8 | 16 |
| L | 26.4 | 28 | 37 | 17 |
| XL | 27.6 | 29.2 | 38.2 | 18 |
Still need help with sizing?
Our dedicated support team is here to ensure you get the perfect fit for your favorite team's jersey.
Contact us at: [email protected]
- Stock: In Stock
- Model: 9587192
- Weight: 0.50kg
- Type: MLB
This offer ends in:
Available Options

Dive into the Emerald City Spirit
Show your unwavering support for the Seattle Mariners with this striking Aqua Alternate Replica Jersey. Evoking the lush evergreen forests and the deep, mysterious waters of the Pacific Northwest, this jersey is more than just apparel; it's a statement of regional pride. Feel the pulse of Seattle, from the roar of the crowd at T-Mobile Park to the vibrant energy of Pike Place Market, all while sporting a look that's as unique and captivating as the city itself.
Authentic Craftsmanship, Unmistakable Style
Crafted by Nike, this replica jersey features the iconic 'Mariners' arched across the chest in crisp, tackle twill stitching, ensuring durability and a premium feel. The deep aqua base is accented with subtle navy trim, mirroring the team's classic color palette. This jersey is designed for the dedicated fan who appreciates the finer details, from the embroidered Nike swoosh to the official MLB authenticity tag, offering both comfort and iconic baseball style.
- Material: 100% Polyester
- Embroidered fabric applique
- Embroidered graphics
- Sizing Tip: Product runs true to size
- Cool Base technology is made with interlocking moisture-wicking fabric for a lightweight, breathable feel.
- Flex Base uniform system reduces overall jersey weight and enhances mobility.
- Patented mesh Air Belt™ for better air flow and less bulk under pant line
- Heat-sealed MLB Flex Base jock tag above left hem
- Stitched tackle name and number on back of jersey
- Stitched tackle number on front of jersey (where applicable)
- Embroidered team patch on sleeve (where applicable)
- Rounded hem
- Sewn-on tackle twill graphics
- Worn by players on-field
- Machine wash
- Imported
Shipping Guide
Shipping time varies by location. These are our estimates:
Normal Orders Custom Orders Processing Time 2 – 3 days 3 – 7 days Shipping Time Frame 12 – 18 days 12 – 18 days Total 14 – 21 days 15 – 26 days