1 year supply plus of dog poop bags! When using EZ poop bags with the patent pending dispenser, it self catches the bag along the perforation line and tears with one pull. One hand pull, self tears, and you're done. No need to look for the perforation line. No unraveling of bags. Ever. Core-less by design for less waste. When you are done with your roll, there are no plastic or paper cores to throw away. No other poop bags and dispenser on the market has these features. Size of bag 9"x12"