Boston Red Sox Pedro Martinez 1999 Cooperstown Navy Mesh Pullover Jersey

NIKE JERSEY FIT & SIZE GUIDE

Measurements are body measurements, not jersey dimensions.

MEN'S MLB

Replica — Relaxed everyday fan fit.

Limited — Premium, more structured standard fit.

Stadium — Premium styling with a relaxed, roomy fit.

Authentic / Elite — Premium on-field-inspired construction with numbered sizing and a longer body.

Replica / Limited / Stadium

Size — Chest / Waist

S — 34–36" / 28–30"

M — 38–40" / 32–34"

L — 42–44" / 36–38"

XL — 46–48" / 40–42"

2XL — 50–52" / 44–46"

3XL — 54–56" / 48–50"

4XL — 58–60" / 52–54"

5XL — 62–64" / 56–58"

Fit: Replica + Stadium = relaxed. Limited = standard.

Authentic / Elite

Jersey Size — Approx. Size — Chest / Waist

40 — M — 38–40" / 32–34"

44 — L — 42–44" / 36–38"

48 — XL — 46–48" / 40–42"

52 — 2XL — 50–52" / 44–46"

56 — 3XL — 54–56" / 48–50"

60 — 4XL — 58–60" / 52–54"

Fit: Intentionally longer through the body for an on-field baseball fit.

MEN'S NFL

Game — Comfortable, relaxed fan fit.

Limited — Premium, more structured fit.

Elite — Premium on-field-inspired performance fit.

Legend — Lightweight, streamlined fan fit.

Size Guide

Size — Chest / Waist

S — 35–37.5" / 29–32"

M — 37.5–41" / 32–35"

L — 41–44" / 35–38"

XL — 44–48.5" / 38–43"

2XL — 48.5–53.5" / 43–47.5"

3XL — 53.5–58" / 47.5–52.5"

4XL — 58–63" / 52.5–57"

Fit: Choose your normal size. Size up for extra room or layering.

WOMEN'S MLB

Women's MLB jerseys have a more tailored fit.

Size — Bust / Waist

S — 34.5–35.5" / 27.5–28.5"

M — 36.5–37.5" / 29.5–30.5"

L — 39–40" / 32–33"

XL — 41.5–42.5" / 34.5–35.5"

2XL — 44–45" / 37–38"

YOUTH NIKE JERSEYS

Size — Height / Chest / Waist

S (8) — 50–55" / 28" / 25"

M (10–12) — 55–60" / 30.75" / 26.75"

L (14–16) — 60–65" / 34" / 28.75"

XL (18–20) — 65–69" / 36" / 30"

FIT & MEASURING

Chest/Bust: Measure around the fullest part.

Waist: Measure around your natural waist.

Between sizes? Choose smaller for a closer fit or larger for a relaxed fit/layering.

If chest and waist fall into different men's sizes, prioritize chest measurement.

Sizing may vary slightly by style. Follow any product-specific sizing note when provided.