Due to being shipped "cash on delivery" and having been "opened," this item is listed as "Like New" and will be sold at a loss, resulting in a deficit! (My beloved dog has not been in it (^_^)) The sides are mesh, and it has adjustable straps to securely fasten to the back and seat of a car seat, preventing your pet from jumping out. I purchased this online for short car trips, but my small dog grew quickly, and it seems too small to use. Returning it was a hassle, so I kept it unused. I personally planned to cover or line it with cushions, towels, or a seat cover. It folds up when not in use, making it convenient. - Size: Approximately 40cm x 30cm x 20cm - Purpose: Dog carrier - Design: Open design with a zipper pocket on the front It will be shipped folded as it was received. No claims and no returns accepted. Thank you for looking.