!! I cannot do business with those who pay at convenience stores! I've only used this for 2-3 matches, opened within the last month. I think you can still use it for practice. How about for massage? This is a "pressure ball," and it's just the right firmness for massage. I will ship via regular mail. It takes 3-4 days to arrive, and there is no delivery on weekends. If it doesn't fit in the mailbox, it may be returned, and a delivery notice may not be left. If you say "it hasn't arrived," it's likely due to the above situation, so please contact the delivery office yourself. I cannot handle this.