2-3 weeks
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I use b.box, I know it works well, but there is a chance that the drinking straw will be chewed up by BB, so if you don't want to buy a new one, you can buy a new set of drinking straw to replace it.
Includes 2 straws + 1 cleaning brush
Flying saucer gravity ball, can be automatically changed with the posture of the suction tube and liquid 360 ° contact, to prevent the inhalation of air.
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