Clean Up Dog Waste Poop Bags 8.5 x 12.5 Inches, 12 microns Thick, Lavender Scent, Easy Tear Off Rolls, Dispenser with Leash Clip, By Just4Pets&reg; These Just4Pets bags. Great for the environment, yet economical enough to use every day! Bags are 12 microns thick, so they are strong, durable, and leak proof bags that will not break or split. You won't poke your finger through while you are cleaning! Great for dogs of all shapes and sizes! Each bag measures 8.5" x 12.5" Large enough to clean up even the biggest mess! This size is also perfect for cleaning out cat litter boxes! Each roll measures approximately 2 3/8" tall x 1 3/8" diameter with a plastic core. There are 40 Rolls with 20 bags per roll = 800 bags. The rolls fit into most bag dispensers on the market, but we designed the adorable red fire hydrant dispenser with the easy screw off bottom especially for these bags. (Fire hydrant dispenser is sold in other Just4Pets packages, not included in this refill bag order)