The unique locking clasp system allows the foldable stool to open and close easily in just seconds, and it locks firmly in place once opened. This collapsible stool can be set to your desired height within the range from 2.5 inch to 18 inch.so everyone should be able to have a comfortable sitting height. Closed size is only 10 inch in diameter and weight is just 2.8lbs. It is portable, lightweight and small to take to anywhere. Plus the adjustable strap allow this stool to be hanging on anywhere or slung across the body