You love to take your best friend with you wherever you go, but sometimes the ride can be bumpy and unsettling for your pet! This safety harness has a fully-padded, fleece-lined vest for superior comfort. The shock-absorbing stretch design protects pets during sudden stops and keeps them from getting jostled during turns. Full-metal connectors at all weight-bearing points provide durability and security. Harness integrates with your vehicle's seat belt tensioning device, allowing a range of motion, but locks in place if there's a sudden stop. Harness works in all vehicles and also doubles as a walking harness. Small size fits pets from 6 to 20 pounds. Medium size fits pets from 20 to 55 pounds.