Please note: 1. Use the clip to close the closure 3 to 3, sliding back and forth 4 times. 2. Open the blue cover of the turbo valve and vacuum out the air. Please do not remove the pink air cushion. 3. Close the blue lid immediately after pumping. 4. Make sure the zipper is closed. The slider and the blue lid are absolutely tight and the vacuum bag does not make Leakage noises.