These liners plus the SimpleHuman can are game changers. We fill a large can daily so a new Q liner is used every single day. No more stretching to fit the can top and no more pierced, ripped bags. The Q bags are a perfect fit with no struggles. Haven’t figured out the cost comparison to store purchased garbage bags because it doesn’t matter. The convenience of use and the time saved with a Q bag is completely worth it. Q bags are shipped to your door and the quality is superb.