This item has been stored unused since it was purchased new. (The following is a quote from the product description) Radish Boy Seven Water Starter Set 1) "Seven Water" (hydrogen generating agent in aluminum pillow) 30 packets (for 500ml x 30 packets) 2) Dedicated plastic bottles (with caps) 2 bottles 3) Dissolved hydrogen concentration test reagent 1 set World No. 1 concentration, hydrogen water 7.0ppm Why not start a healthy habit with the new sensation healthy water "hydrogen water"? (Recommended for those who...) ● Concerned about skin condition ● Feeling a bit lacking in exercise lately ● Concerned about stress and irregular eating habits ● Have lost confidence in their health