Quick answer
Built for men: the Seattle Mariners alternate jersey pairs a breathable athletic mesh body with vented side panels and team lettering. US sizing (men's S–3XL). Ships in 1–3 business days; free worldwide delivery at $57 or more; 30-day returns, first size exchange free.
✓ Dispatch in 1–3 business days✓ 30-day returns, no restocking fee✓ Free first size exchange✓ Tracked worldwide shipping
Some jerseys are worn once a season. This Seattle Mariners alternate one is worn every week — your player on the back is the reason.
Shoulders are set for movement rather than for the mannequin. Sizing runs on the US scale, so the usual letter size is the right call.
Construction is straightforward: a breathable mesh body, vented side panels, heat-sealed lettering and a V-neck collar. Cut for men, sized men's S–3XL. It ships with the name and number already applied — nothing to iron or assemble on arrival. Machine wash cold, tumble dry low, and it is ready to wear again the next morning.
It reads as Seattle Mariners gear anywhere, but the palette points straight back to Seattle, Washington and T-Mobile Park.
Jersey Details
| League | MLB |
| Team | Seattle Mariners |
| Jersey type | Alternate jersey |
| Made for | Men's |
| Colour | Teal |
| Sizes | men's S–3XL |
| Fit | US Standard Relaxed Fit |
How to Wear It
Made for long afternoons in the bleachers — mesh panels do the work when the sun is out.
Ballpark Details
- › Heat-sealed name and numbers applied to match the on-field look
- › Mesh side panels for airflow through a full game
- › Relaxed cut that layers over a tee without pulling at the shoulders
- › US sizing, men's S–3XL
Specifications
| Material | Breathable Athletic Mesh (100% Performance Polyester) |
| Lettering | Durable Heat-Sealed Lettering & Numbers |
| Care | Machine wash cold inside out, tumble dry low |
Care Guide
Machine wash cold inside out with a mild detergent, then tumble dry low. Skip fabric softener and high heat, and do not iron directly over the lettering.
Shipping & returns
Tiered insured worldwide shipping: $7.00 on orders $0.00–$36.99, $5.00 on orders $36.99–$56.99, and free delivery on orders of $57 or more. Orders dispatch within 1–3 business days and arrive in 7–15 business days with full end-to-end tracking.
| Order total | Shipping fee |
| $0.00 – $36.99 | $7.00 USD |
| $36.99 – $56.99 | $5.00 USD |
| $57.00 & above | FREE |
✓ $57+ · Free worldwide delivery on orders of $57 or more✓ From $5 · Tiered flat rate from $5 under $57✓ 30 days · 30-day hassle-free returns, zero restocking fees✓ Free · First size exchange is completely free
Frequently asked questions
What if the jersey does not fit when it arrives?
You are covered by our 30-day hassle-free guarantee with zero restocking fees. If the fit is not ideal, contact our support team and your first size exchange is completely free.
What is the difference between this fan version and an on-field jersey?
This is fan apparel built for supporters: a lightweight mesh body and a relaxed cut, not the athletic cut worn by players on the field.
Does this baseball jersey have a curved hem?
Yes, it features the classic baseball curved hem, designed to provide comfortable coverage and sit cleanly over shorts or denim.
Will the fit work for layering over a hoodie in cold weather?
US letter sizing with a relaxed chest and shoulder cut leaves room for a hoodie or thermal underneath without pulling at the seams.
