Instructions to use How to use it? The convenience bag has a waterproof paper squeeze collar to open and hold in front of mouth. Inner valve automatically seals shut, which prevents contents from leaking or spilling - even if dropped. No strings or twist ties necessary to seal as other type plastic vomit bags. Details This vomit bags are disposable. There is a lock that ensures sanitary disposal. The plastic bag is attached to the waxed cardboard funnel. The 6.7 " wide collar makes their use convenient and helps to avoid spillage. They are suitable for both kids and adults. Fold along the creases shown in the picture. The convenience bag has a waterproof paper squeeze collar to open and hold in front of mouth. Inner valve automatically seals shut, which prevents contents from leaking or spilling - even if dropped.