Bags on Board makes picking up after your pets a walk in the park. The sturdy design makes for a dependable yet environmentally friendly tool for the most undesirable of tasks. All Bags on Board are 100 percent biodegradable with 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.