... 2 at most)3, Tie the belt and check everything is in well condition4, Scroll it at grass slope not ... of human hamster ball :A, Make sure the belt is tight before playing the human hamster ballB, People who ... it again; do regular check and assure the zorb is in good conditionGuarantee of human hamster ball :A, ... as time passes by, so tpu’s lifespan is longer than pvc because of its resistance to oxidation ...