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Easily refillable balls, with which you can achieve the desired weight. Also suitable for beginners.
Bubble ball is ideal for beginners, because it's similar like beanbag. Bubble ball has a matt surface and doesn't jump if fall to ground.
Adjustable weight of ball. You can open the ball and change amount of fill materiel.
Specification:
Diameter: 63 mm
Weight: 120 g
Price per piece.
Data sheet