We buckle up. Why shouldn't our best friends? Minimize driving distractions and increase protection for both you and your dog. Bergan's harnesses meet V9DT B2009.1. Pet Safety Durability Test (see www.v9dt.com) . The minimum durability thresholds are designed to ensure confidence that a harness will withstand forces generated from sudden stops while minimizing distractions from traveling pets. The complete harness system comes equipped with adjustable safety tether and two high-grade aluminum carabiners. The harness is durable but lightweight and comfortable.