Section 2: Equipment

Circumference: 66–68 cm (26–26.8 in) — slightly larger than the indoor ball (65–67 cm); Weight: 260–280 g (9.2–9.9 oz) — slightly lighter than the indoor ball (260–280 g overlap, but beach balls tend toward the lighter end); Internal pressure: 0.175–0.225 kg/cm² (171–221 mbar; 2.49–3.20 psi)...

Send this to your friend — argument over.