Material and safety: Made from density heavy duty nylon for durability, elasticity, and abrasion resistance. The zinc alloy swivel buckle features a safety antimisopening mechanism to prevent accidental release and injuries. Designed to support safe, comfortable travel for your pet. Comfort and protection: Elastic cushioning reduces shocks from sudden braking or sharp turns, minimizing strain and the risk of breathing restriction. Keeps pets in a defined space so they can move without being restricted or tangled. Adjustable fit and 360 swivel: Adjustable length from 64 cm to 79 cm for the harness, 85 cm to 100 cm for the strap, with a 67 cm clasp included. The 360 degree swivel clip prevents twisting, allowing your dog to sit, stand, lie or recline comfortably. Easy to use and universal compatibility: Quick release buckle and elastic design enable fast clipping. Compatible with most vehicles. Includes 1 car seat belt and 1 headrest seat belt, giving you flexible wearing options. Practical use scenarios: Road trips and daily car rides to keep your dog secure and reduce driver distraction. Short errands with quick switching between wearing methods. Works in sedans, SUVs, and trucks with most seat configurations.