Four Paws - Safety Sitter. The Safety Seat Support Harness was designed for pet’s safety while riding in vehicles. This harness is fleece lined for maximum comfort and attaches easily to any car seat belt or leash. Available in four sizes to ensure a snug fit. For use in the car, put the seat belt through the nylon loop located on the upper strap and fasten. Size: Small – 15 – 30 lbs Medium - 30 – 65 lbs Large – 65 – 110 lbs. SMALL SAFETY SITTER CLICK BELOW: Malta Free Delivery EU Customers Non EU Countries FP359230 MEDIUM SAFETY SITTER CLICK BELOW: Malta Free Delivery EU Customers Non EU Countries FP359240 LARGE SAFETY SITTER CLICK BELOW: Malta Free Delivery EU Customers Non EU Countries