This portable shower is perfect for a variety of uses, including swimming in the ocean, camping, washing your dog's paws, cleaning mud off bicycles, and washing fishing gear. It utilizes water pressure to create a shower, so no electricity is needed, and it can be used anywhere. I've used it once or twice, and it's been stored in the garage. I've confirmed that it works. Currently, it's difficult to obtain in Japan. This is what it is: ↓ https://gigazine.net/news/20160524-rinsekit/