This dog car booster seat measures 16"L x 12.6"W x 9.5"H and easily holds small and medium dogs up to 20 lbs. Suitable for most cars, SUVs, and other vehicles. Stainless steel rod structure on the top & all around sides combined with sturdy solid bottom to support the pet booster seat shape; will not collapse. Designed with 2 suspension systems with 2 pair hooks on front and sides so you can adjust the height to let your dog see out of the window of the car. Booster seat material is thick, anti-skidding, washable, breathable, strong, waterproof and easy to clean.