[improve concentration] wrist moon stone elastic ball decompression rebound with rope children's high elastic swing ball 【提升专注力】手腕月球石弹力球解压回弹带绳儿童高弹力甩甩球

children's fun childhood [improve concentration/throw rebound]]

[gradient yellow] exercise hand and brain flexibility increase by antistress 100% [red gradient] exercise hand and brain flexibility increase by antistress 100% [gradient blue] exercise hands and brain flexibility, increase by antistress 100% play with both hands [gradient yellow + red gradient] antistress increase by 200% play with both hands [gradient yellow + gradient blue] antistress increase by 200% play with both hands [red gradient + gradient blue] antistress increase by 200% [no wristband... random color] moon ball