- ADJUSTABLE & SECURE FIT: Specifically designed for medium to large breeds such as Labradors, German Shepherds, and Golden Retrievers. This backpack harness includes reinforced straps and a D-ring leash attachment. Easily adjust the chest size (20"-30") and neck size (22"-34") for a snug and secure fit that stays in place during all your adventures. - VERSATILE FOR OUTDOOR ACTIVITIES: This dog hiking backpack is an essential companion for outdoor enthusiasts. The adjustable straps provide a secure and comfortable fit, allowing your dog to move freely while keeping their gear secure. - MULTIFUNCTIONAL DESIGN: The all-in-one saddle bag features expandable side pockets, interior compartments, and a collapsible bowl slot. It's ideal for carrying food, water, toys, and first aid supplies. Perfect for hiking, camping, or daily walks, this backpack allows your furry friend to share the load while staying comfortable. - DOG SIZE GUIDE: Medium size fits neck girth of 22-31 inches and chest girth of 20-27 inches; Large size fits neck girth of 24-34 inches and chest girth of 22-30 inches. Measure your pet's neck and chest circumference for the best fit. Ideal for active breeds that love exploring trails, parks, and neighborhoods. - PRACTICAL USE SCENARIOS: Whether you are planning a weekend hike, a camping trip, or simply taking a stroll around the neighborhood, this backpack harness provides the functionality and comfort your dog needs to enjoy every adventure.