【QUICK RELOAD IN SECONDS】Compatible with most standard rolls for easy refills anytime. The secure click-and-lock cap keeps bags from falling out and twists open easily for quick, mess-free refills—just turn, reload, and walk on.( Note: The refill cap for changing bags is on the hook side, not the roll-back side.) 【SMOOTH OUT & SMOOTH BACK IN】 Our dog bag holder features a wide oval opening and an exclusive roll-back shaft inside, ensuring every bag pulls out smoothly. If you pull out too many, simply rotate to roll them back in—keeping your bags neat and tidy at all times. For the best retractable performance, we recommend using our poop bags or hexagon-core bag rolls, as standard rolls may not deliver the same smooth retractable experience. 【GIVE YOU A HANDS-FREE WALK】The dog bag dispenser features a built-in hook that holds up to 4 used poop bags—no more carrying smelly bags by hand. This 2-in-1 design saves you from buying a separate uesed bag carrier and keeps your walks cleaner and easier 【FLEXIBLE STRAP ATTACHES ANYWHERE】This compact, lightweight poop bag holder comes with a durable strap that securely attaches to your leash, backpack, stroller, or belt. So you can walk, hike, or travel without worrying about it getting in the way 【WALKING TRACKER & ACTIVITY LOG】 Track every walk with real-time route, distance, calories burned, and waste (poop) logs. Review daily, weekly, and monthly summaries to better understand your dog’s exercise and health habits. Get notified of unusual changes so you can act early 【ECO-FRIENDLY POOP BAGS INCLUDED】Comes with 15 certified eco-friendly bags made from 70% post-consumer recycled plastic.Our bags are over 60% thicker than most dog poop bags, guaranteed leakproof, and lightly lavender-scented to reduce unpleasant smell of pet poop PawView Dog Poop Bag Holder for Leash, Retractable Dispenser with Waste Bag Hook, Lightweight Dog Bag Dispenser with Smart Health Tracker, Quick Refill, Includes 15 Leakproof Bags (Black)