Product overview A car passenger-safe harness and seat belt system for medium to large dogs (up to 100 pounds). Designed to keep pets secure during travel while allowing window-breeze comfort and reducing driver distraction. Key benefits — why you need it Keeps your dog safely restrained in the car to reduce escapes, jump-outs, and driver distraction during travel. Preserves comfort and breathing room by allowing controlled window breeze without compromising safety. Absorbs and buffers sudden forces to reduce neck strain and lessen the impact of abrupt stops. What makes it stand out Window breeze–friendly design: secures your pet while permitting comfortable airflow so pets can enjoy fresh air without risking escape. Jump-out prevention system: engineered protection against sudden stops and attempts to jump from the vehicle; includes horn sound reaction control to help keep pets calm and harnessed. Shock-absorbing harness: integrated pull-force buffering system minimizes neck stress and distributes force away from the throat. Ergonomic hand grip: easy, responsive handling and short control when you need to steady or guide your dog. Robust, pull-resistant structure and adjustable harness length built for medium to large dogs, supporting pets up to 100 pounds. Function, compatibility, size, and performance Compatibility: Designed for medium to large dogs; rated to support up to 100 pounds. Fit and adjustability: Adaptable harness length allows a secure, customized fit for different dog sizes and body shapes. Performance: Pull-resistant construction and shock-absorbing buffering provide reliable protection in normal driving conditions and during sudden stops. Use: Intended for in-car use as a passenger harness/seat belt to keep pets secured on the seat or restrained while the vehicle is in motion. How it solves common problems Prevents pet escape and sudden leap-outs at windows or doorways. Reduces driver distraction by keeping the pet in a stable, controlled position. Minimizes risk of neck injury or strain from pulling or sudden deceleration. Helps manage pet reactions to vehicle noises with horn sound reaction control. Practical use scenarios Daily commute: Keep a medium or large dog secure and comfortable on short trips to the park or errands while allowing safe window airflow. Long road trips: Maintain a stable, cushioned restraint that reduces fatigue and neck stress over extended drives. Emergency stops or vet visits: Prevent jump-outs and provide quick, ergonomic control when you need to steady or remove your dog from the vehicle. Care and handling notes Adjust harness length for a snug, comfortable fit before each trip. Use the ergonomic hand grip to manage the dog during stops and when securing or releasing the harness. Inspect harness and attachments regularly for wear to maintain performance. If you need a reliable in-car restraint for medium to large dogs that balances safety, comfort, and control, this seat-belt-style harness is designed to deliver secure travel, jump-out prevention, and shock-absorbing comfort for dogs up to 100 pounds.