Comfort:The dog car seat is made of polyester fiber that is strong and long-lasting. High-density sponge padding provides stable support to the bottom and sides of the dog seat. 4.5-inch thicken sponge cushion raises the dog booster seat, allowing most dogs to enjoy the view out the window and relieve travel anxiety. Ample Space: Measuring 27.9*18.8 inches (L*W), this medium dog car seat accommodates pets up to 50 lbs, ideal for two small dogs under 25Lbs or one medium to medium dog. Its spacious design allows your furry friends to relax comfortably during car rides or adventures. In addition, the pet car seat is easy to install in the back seat or the trunk of most cars. Security: Enjoy a journey with your puppy with the multiple security measures. The car dog seat includes a car seat pin, seatbelt fixing, lanyard attachment, and two safety belts, ensuring your dog's security. The non-slip bottom further enhances safety during your journeys. Functional Use: Not only for outdoor car journeys but also can be used at home. You can use it as a cozy medium dog bed, or unzip the side zipper, as a sofa cushion to keep the sofa clean. In addition, with side pockets design to store pet supplies. Removable & Washable: The outer sleeve of the puppy car seat is a removable short plush cover. It is waterproof fabric for easy daily tidying. Dust and stains on the surface can be effortlessly wiped off with a damp cloth. When cleaning it, open the side zips, remove the sponges, and then put the seat cover into the washing machine. (Note: The inner sponges can't be washed)