It is said that it was created by three students of the Industrial Design department living in London. It is cheap and easy to make, harmless and clean. According to research students, "80% plastic bottle containers are thrown away without being recycled". I thought that this "Ooho!" Was developed because I do not want to increase the amount of garbage in PET bottles any more. That social fascion, it is wonderful! However, there are drawbacks. When you drink water (eat), the film breaks and water spills on your face and clothes. It's fine if it's a bite size, as it becomes big, water will overflow at the moment you gnaw. It seems to take a while until I grab a knack. As for anything, this is that it can be made at home, so if you are interested, try searching.
