ADJUSTABLE TOILET SEAT ELEVATOR - inflatable toilet seat cushion provides extra comfortable for covering hard toilet seats and support various hardness by press the air nozzle the upgraded air nozzle allow you to adjust the air volume to fit your sitting comfort. Note:close the adjustable nozzle cover after adjustment completed. It's a best commode support cushion for adults ,seniors,elderly , disabled ,tailbone pain relief. SAFETY EASY TO CLEAN - Made of thickened PVC , Durable and easy to clean, pass 24-hour leakage test, you don't worry about air leakage problem and getting a better experience from our pillow. LIGHTWEIGHT PORTABLE - The toilet seat cushion weights only 0.45lb and holds weight up to 220lb/100kg ,keep in your backpack or pocket for easy access anywhere. EASY TO INFLATE - Equipped with upgraded air valve, clean the nozzle before inflation and Simple blow up by mouth or you can use an pump to inflate it (NO PUMP incl.). For hygiene purpose, We recommend you to do inflation by pump. Due to the characteristic of inflatable product.air refill is required. we suggest 3-5 days to refill one time. NOTE: The inflatable cushion is equipped with four suction cups, and the two suction cups at the back can hold onto all type of toilet lid. In general, the two suction cups at the back are enough to hold the inflatable cushion in place.The two suction cups in the middle can only completely suction onto a part of the toilet lid.