Shinai Size and Weight Regulations
| AGE | SIZE | Min Weight Male |
Min Weight Female |
| Under 12 | 30-37* | No Restriction | No Restriction |
| 12 - 15 | 37 | ≥440 g | ≥400 g |
| 15 -18 | 38 | ≥480 g | ≥420 g |
| 18+ | 39** | ≥510 g | ≥440 g |
- For juniors under 12, the height of the player will determine the size of shinai. Usually if the shinai fit from ground to arm pit of the player, it is a good rule-of-thumb size.
- ** For women 18+, size 38 can be used.
Additional Shinai Dimension Regulation to consider:
Sakigawa Tip Diameter
- Men Minimum 25mm (junior) - 25 mm (junior) → 26 mm (older)†
- Women Minimum - 24 mm (junior) → 25 mm (older)†
Sakigawa Tip Length
- Men Minimum 50mm
- Women Minimum 50mm