These Bags on Board refills fit any Bags on Board product you own. Each roll contains 15 bags. Bags on Board makes picking up after your pets a walk in the park. The sturdy design makes for a dependable tool for the most undesirable of tasks. Double sealed construction and a leak proof guarantee. Bags on Board is a compact, refillable dispenser which houses a roll of 15 large doggie clean-up bags. It attaches to any kind of leash - standard or retractable. With Bags on Board you"ll always have bags with you.