Size
Size 5: U17 boys and men (15, 16 and 17 years old).
Caution: the age categories may differ between countries.
Circumference / weight
68-71 cm / 420 grams.
Circumference and weight that meet the FINA regulations (International Swimming Federation).
Design
MAINTAINING OPTIMAL PRESSURE: Longer time between inflations thanks to the 80% butyl bladder. Butyl is the most airtight rubber.
IMPROVED GRIP IN WATER:
Our ball has had two upgrades compared to the WP500 ball:
- wider channels for a better grip.
- A rubber component with improved grip, called "soft tacky".