What does "removable and multifunctional" mean? It lets you customize your setup: - Minimalist Mode: Just belt & leash for running. - Full Gear Mode: Add pad & pack for hiking/daily carry. - The pack stores all parts for easy organization. Can it handle a hard-pulling dog? For dogs 5-50 kg (11-110 lbs). Easy control for 11-33 lbs dogs. The widened belt & shock absorption provide stability for 33-120 lbs medium & large dogs. Is the waist belt adjustable? What waist size fits? And how long is the dog leash? Yes. Both the belt and the leash are adjustable in length! Fits waists ~60-120 cm (24-47 inches). The dog leash is adjustable in length from 51'' to 58''. Check the product size chart for best fit. Can it be used in rain? Is it waterproof? The pack fabric is water-resistant against light rain/splashes. Not fully waterproof/submersible. Avoid heavy rain or submersion. Belt & leash dry quickly and are easy to clean. What are the advantages vs other hands-free leashes? Key upgrades: - Thickened handles & pad for comfort & protection. - Wider belt better distributes force. - Spacious multi-compartment pack fits phone + more, prevents scratches. - Water-resistant pack fabric protects items from light rain/splashes.