Stamp on your hands! Hand washing complete when the stamp disappears after 30 seconds of washing with soap. Image 2: Car balance as a bonus. Safe food coloring, 670 yen each on Rakuten. Blue puppy paw print. Stamp on the palms and backs of hands, and simply wash thoroughly until the stamp disappears. The mechanism is designed so that the stamp disappears in about 30 seconds, the hand washing time required for infection control. You can enjoy hand washing. To reduce shipping costs, it will be sent anonymously in this bag without bubble wrap. Thank you. It's 400 yen each on Amazon. #AnonymousShipping #NurserySchool #Kindergarten #Puppy #HandStamp #HandWashing #HandWashingPractice #InfectionControl #Stamp #PeekABoo #EntrancePreparation #InfluenzaPrevention #U-tan