Size and compatibility S model: 52 x 50 x 57 cm, suitable for small to medium dogs up to 22 pounds. L model: 76 x 52 x 57 cm, suitable for medium to large dogs up to 55 pounds. Designed for both front and back seats and fits most vehicles including cars, SUVs, and trucks. Comfort and safety for travel Covered with super soft fabric and filled with density sponge and PP cotton. The 18 cm thick raised edge around the round bed provides security and supports the head and neck. Helps relieve joint and muscle pain and can ease anxiety for a more restful ride. Antislip base and protection Nonslip bottom keeps the bed fixed on the seat. Bottom features sticky beads and density fabric that is waterproof and dustproof, helping to prevent skidding and keep pets dry and warm. Easy installation and safety features Quick setup with an adjustable buckle and headrest. Includes leashes with rustproof buckles that can be attached to your dog's harness to prevent jumping out. Practical use scenarios Road trips and daily drives: keeps dogs secure and comfortable on long or short rides, suitable for both S and L sizes depending on your dog. Front or back seat use in cars, SUVs, or trucks: accommodates various seating configurations while maintaining stability. Vet visits or grooming trips: a familiar, secure resting place that reduces stress during car rides. What's included Adjustable buckle and headrest for easy setup. Leashes with rustproof buckles for securing your dog to the harness.