Use this guide to size the Hayabusa T3 Striking Shin Guards. Fit is determined by two measurements: shin length (top of foot to just below the kneecap) and the circumference of your calf at its widest point. Shin guards that are too short leave the knee and instep exposed; ones that are too long ride into the kneecap and rotate during kicks.
How to measure
- Shin length: stand upright with your weight evenly distributed. Measure from the top of the foot (just where it meets the ankle) up to the bottom edge of the kneecap.
- Calf circumference: measure around the widest part of your calf muscle with the leg relaxed.
- The top of the shin guard should sit just below the kneecap. The side extensions should cover the outer part of the knee.
- The instep flap should sit flat across the top of the foot. If it folds or bunches up, the guard is too long.
Shin length and calf circumference to size
| Size | Shin length | Calf circumference |
|---|---|---|
| S | 12 – 13 in (30 – 33 cm) | 11.5 – 14.0 in (29 – 36 cm) |
| M | 13 – 14 in (33 – 36 cm) | 13.0 – 15.5 in (33 – 39 cm) |
| L | 14 – 15 in (36 – 38 cm) | 14.5 – 17.0 in (37 – 43 cm) |
| XL | 15 – 16 in (38 – 41 cm) | 16.0 – 18.5 in (41 – 47 cm) |
Notes
- If shin length puts you in one size and calf circumference puts you in another, prioritise shin length — the guard must sit between the foot and knee correctly. Calf width adjusts via the rear straps.
- For Muay Thai amateur competition, shin guards with full foot protection are mandatory — confirm your governing body's rules before competing.

Shop the full Hayabusa shin guard range at /collections/hayabusa.
The Hayabusa T3 Striking Shin Guards are designed for a secure, non-slip fit, regardless of training intensity. Featuring hundreds of silicone beads and two adjustable straps, they stay locked in place for ultimate performance. The pre-curved, multi-layered padding offers superior protection, while the extended outer coverage ensures your shins are fully shielded.
- Non-slip fit with silicone beads
- Extended outer protection
- Pre-curved multi-layered padding for comfort
- Adjustable straps for a secure, customised fit
- Elastic supports for heel and instep
Manufactured by: Hayabusa
Product Type: Shin Guards
Gender: Unisex
Material: Synthetic Leather
Origin: Vietnam
£4.99 FREE - Spend over £75 (*Mainland UK only) - Delivered within 3 working days - Estimated delivery date provided at checkout - Tracking number available once shipped
£9.99 - Delivered next working day - Estimated delivery date provided at checkout - Tracking number available once shipped - Subject to order cut off times. *Order before 12pm.
£23.99 - Delivered within 4 working days - Estimated delivery date provided at checkout - Tracking number available once shipped - Destinations include Northern Ireland, Scottish Highlands and Channel Islands.
from £20 - For orders over 100cm in length or 30kg in weight. - Oversized items are not eligible for free delivery - Total cost calculated at checkout. Please check dimensions and weight are suitable before completing your order to save any unexpected returns costs.
Easy Returns available on all UK mainland orders via our returns centre - Please complete the returns form in full and send your order back to us via your selected method. - Returns will be processed within 7-14 days of receipt - If your order is oversized please contact us to arrange an alternative returns method. For more information view our returns policy.
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