The Solvit Pet Booster Seat provides the ultimate ride for the pampered pet. Some booster seats sit too low, or they are supported by straps that attach to the front of the basket, making it difficult for pets to move around. Our design elevates pets to provide a clear view of the road, with no clumsy straps to get in their way. Installs securely in one minute and even works in the back seat! Internal frame design supports seat from below, providing an unobstructed view for pets Installs securely in one minute in all vehicles with headrests Works in the back seat, if headrests are present Removable, washable liner keeps seat clean and fresh Safety leash included Front storage pocket Medium size is 14"L x 12"W x 8"H and holds pets up to 12 lbs Large size is 16"L x 14"W x 8"H and holds pets up to 18 lbs Ex Large size is 20"L x 16"W x 10"H and holds pets up to 25 lbs.