Quick answer
Measure your chest and compare it to the shirt’s flat measurements. For a relaxed fit, choose a size with 2–4 inches of extra room; for a fitted look, choose one with 0–1 inch of extra room.
Why Japanese band shirts fit differently
Concert t‑shirts from Japanese artists often use a different sizing standard than Western brands. A Japanese L size (about 73 cm body length, 55 cm width) is similar to a US M or slim L. Always check the flat measurements rather than relying on the letter label.
The shirt material also affects fit. A 100% cotton shirt (like the 「春歌の軌跡」 tour tee) will not stretch as much as a cotton‑blend, so the flat measurement is your best guide.
How to measure a shirt you already own
Lay a well‑fitting t‑shirt flat on a table. Measure the chest width from side seam to side seam, about 2–3 cm below the armhole. Double that number to get the full chest circumference. Compare it to the product’s stated width measurement.
For length, measure from the top of the shoulder seam straight down to the bottom hem. This helps you decide if the shirt will hit at your waist or below.
Decision rules for choosing your size
- Measure your chest: Wrap a measuring tape around the fullest part of your chest, under your arms. Keep the tape snug but not tight. Write down the number in inches or centimeters. Use this number as your baseline.
- Compare with flat measurements: Double the shirt’s flat width to get the full chest circumference. Example: 55 cm width × 2 = 110 cm (43.3 inches). Subtract your chest measurement from that number. A difference of 2–4 inches (5–10 cm) means a relaxed fit; 0–1 inch (0–2.5 cm) means a fitted look.
- Check the length: Shirts with a body length of 73 cm (about 29 inches) will cover the waistband of most pants. If you prefer a cropped look, look for lengths under 70 cm. If you are tall (over 6 feet / 183 cm), a 73 cm length may still be short; consider sizing up for extra length.
- Consider shrinkage: 100% cotton shirts may shrink 3–5% after the first wash. If you are between sizes, choose the larger size to account for shrinkage. Wash in cold water and air‑dry to minimize shrinkage.
- Read the product description carefully: Look for the phrase '1サイズのみ' (one size only) to confirm the shirt comes in a single size. Check the flat measurements every time, even if you have bought from the same artist before.
Product sizing details
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「春歌の軌跡」オリジナルツアーTシャツ（Lサイズ/ピンク）: L size measures 73 cm body length × 55 cm body width × 50 cm shoulder width × 22 cm sleeve length, 100% cotton. A 55 cm width means the full chest circumference is about 110 cm (43 inches). If your chest measures 40–42 inches, this L will give a relaxed fit; if you prefer a slimmer look, you may want a size down.
「春歌の軌跡」オリジナルツアーTシャツ（Lサイズ/ピンク）
Which fit is right for you?
Best for
- Relaxed fit: casual everyday wear, layering over a long‑sleeve shirt, or if you prefer a looser silhouette.
- Fitted fit: wearing alone, tucking into jeans, or if you prefer a more tailored appearance.
Not for
- Very tall or broad‑shouldered people: a Japanese L may be too short or narrow. Look for Western‑sized shirts or size up.
- Oversized‑look fans: if you want a baggy, streetwear‑style fit, consider ordering two sizes up from your usual.
