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Amazon.co.jp: MIKASA VLS300 Beach Volleyball International Certified Ball (General / College, High School / Middle School), White/Yellow/Blue, Recommended Inner Pressure: 0.4 lbs (0.2 kg) per cm), Circumference: 26.0 - 26.8 inches (66 -
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Amazon.co.jp: Mikasa Volleyball, No. 5, International Certified Ball, General University, High School, Yellow/Blue, V200W, Recommended Inner Pressure: 0.3 kgf/cm2 : Sports & Outdoors
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