Designed with a one-way valve so liquid stays in straw even if it is moved from the user’s lips.
Suitable for people who are not able to suck strongly. Prevents air from being sucked into user’s stomach, which can cause pain and discomfort. Straws clip easily onto glasses and cups and can be washed in normal washing solutions or sterilized with boiling water. Not dishwasher safe. Not suitable for thick fluids.