Guarantee fits all Munchkin diaper pails: Original, PAIL and STEP diaper pailsGuarantee odor control: enhanced 7-layer bags hold the odor tightly inside, keep your home freshGuarantee 100% satisfaction: If you are not satisfied for any reason, we refund all your money. No question askedEnvironmental friendly: new design with less plastic disposal, save the environment and save your hard earn money