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The Speedo 5cm Briefs Boys - Black are a Speedo classic. The Speedo boys briefs have a comfy, modernised fit. Offering great freedom of movement, it boasts an internal drawstring for a secure fit. 100% chlorine resistant thanks to the highly-durable Speedo ndurance+ fabric, it’s perfect for regular pool sessions.
Speedo Swimwear the worlds leading swimwear brand. Speedo is passionate about life in and around the water, creating revolutionary new technologies, designs and innovations.
| SPEEDO TRAINING SWIMWEAR BOYS SIZE CHART | |||||
|---|---|---|---|---|---|
| AUS Size | Waist | Chest | Height | GB Size | Alpha |
| 6 | 58cm | 60-65cm | 115-120cm | 5-6yrs / 24 | XS |
| 8 | 60cm | 65-70cm | 125-130cm | 7-8yrs / 26 | S |
| 10 | 65cm | 70-75cm | 140-145cm | 9-10yrs / 28 | M |
| 12 | 65-70cm | 75-80cm | 150-155cm | 11-12yrs / 30 | L |
| 14 | 70-75cm | 80-85cm | 160-165cm | 13-14yrs / 32 | XL |
| 16 | 75-80cm | 85-90cm | 170-175cm | 15-16yrs / 34 | XXL |
| Updated July 2025 | |||||
