Safety First: LELEFIDO large dog car seat features double straps to securely attach to the car seat backrest and a nylon buckle to connect the seat belt to your pet. The non-slip bottom ensures stability during travel, providing multi-layer safety. For your dog's safety, please ensure the dog car seat's safety harness is properly secured Size Guide: The dog car seat measure 43.3" x 21.7" x 17.7", Suitable for medium to large dogs weighing 40-80 pounds, or two small dogs Durable, Comfortable Materials: The exterior of this dog booster car seat is made of durable Oxford fabric that’s both comfortable and resistant to scratching or biting. The interior is filled with high-resilience PP cotton, offering superior comfort and support. This ensures that your pet enjoys a cozy and relaxing ride, whether it’s a short trip or a long journey Easy to Clean: The independent padding can be removed for cleaning, and the outer shell is machine washable, making this dog car seat easy to maintain and keep fresh for every journey.The included multi-functional waterproof mat is designed to easily handle spills, providing additional protection to keep the pet car seat clean Thoughtful Design: This dog car seat large is crafted with side storage pockets to keep your pet’s essentials organized and easily accessible. It can meet the needs of dogs of different sizes. If you think the padding is too thick, you can easily adjust the amount of padding through the inner zipper. Usage Instructions 1.Pre-Installation Check: Ensure the dog car seat is properly installed in your vehicle. Double straps should be securely fastened to the car seat backrest, and the safety belt should be attached to your pet’s harness. 2.Safety Use: Always ensure your pet is wearing a harness and secured with the seatbelt connecting to the car seat. Never use the dog car seat without properly securing your pet, as it ensures their safety during travel. 3.Weight Limit: Ensure your pet’s weight falls within the recommended range for this product, typically designed for small to medium dogs. Pets that exceed the recommended weight may affect the stability and safety of the seat. 4.Monitor During Long Journeys: For long trips, periodically stop to check on your pet’s comfort and ensure they are safe in the seat. Avoid keeping your pet in one position for too long to ensure their health.