Long Sleeve T-Shirts Sizing Guide: Get the Perfect Team Fit

Sleeve length adds a variable that short-sleeve tees do not have, so sizing custom long sleeve t shirts deserves a careful look. A long sleeve that fits everywhere except the arms feels wrong the moment a player puts it on. This guide helps your whole roster land the right fit across the chest, body, and sleeves.

Measure Chest, Length, and Sleeve

For long sleeves, three measurements matter rather than two: chest width, body length, and arm length. Capturing all three and matching them to the size chart prevents the all-too-common problem of sleeves that ride up too short. The extra measurement takes only a moment and saves a round of swaps later.

• Measure the chest at its fullest point with the tape level.
• Measure body length from the shoulder seam down to the hem.
• Measure the sleeve from the shoulder to the wrist.

Youth Versus Adult Proportions

Youth long sleeves are proportioned differently than adult cuts, and the gap shows up most clearly in arm length. For mixed-age teams, use youth sizing for younger players and pay close attention to tweens, who often sit at the crossover. When that age group is borderline, comparing both charts side by side is the safest move.

Fit Preference and Layering

Because long sleeves are frequently layered, ask whether each player wants a closer base-layer fit or a roomier standalone fit, then size within the chart accordingly. A player who plans to wear the shirt under a jacket may prefer it snugger, while one wearing it on its own may want more room.

Handling Borderline Sizes

When a player is between sizes, sizing up usually gives better sleeve coverage and survives repeated washing without feeling tight. A long sleeve that starts out slightly roomy ages far more gracefully than one that started out snug.

Ordering Spares

Add a few extras in common sizes for new players and replacements throughout the season. Compare with the short-sleeve tee and performance tee charts too, since those cuts can differ from the long sleeve.

The single most common long sleeve complaint is sleeves that ride up too short, and it happens because teams size off chest measurement alone and forget the arms. Players with longer-than-average reach are especially likely to be caught out by a standard chart match. The fix is simple: always capture arm length alongside chest and body, and when a player’s arm measurement points to a larger size than their chest does, lean toward the larger size for proper coverage. Treating sleeve length as a first-class measurement rather than an afterthought is what separates a long sleeve order that fits everyone from one that generates a pile of swap requests.

Hold onto the completed measurement sheet after the order ships. Arm length in particular is easy to forget by next season, so a saved record spares you from re-measuring the whole roster and keeps replacement shirts and new-player orders consistent with the originals. The small effort of keeping that file pays off every time you order again.

FAQ

These are the sizing questions teams raise most often for long sleeve orders.

How do I avoid sleeves being too short? Measure arm length and match it directly to the chart, and when the arm measurement points to a larger size than the chest does, lean toward the larger size for proper sleeve coverage.

Do you offer youth long sleeves? Yes, both youth and adult sizing are available.

Should I size up for layering? Sizing up helps if players will wear the shirt over other layers.

Measured your roster? Order custom long sleeve t-shirts that fit everyone. With chest, body, and sleeve measurements captured and saved, you can outfit the whole roster in long sleeves that fit properly the first time and stay easy to re-order later.