LARGE SPACE & STRONG SUPPORT BIKAEIK'S back seat extender for dogs turns all the space in the back seat into a resting space for dogs with 8 sturdy load-bearing plates built-in. Provides strong support of up to 350 pounds for your dog, making it ideal for larger dogs and multi dog households. MESH WINDOW & STORAGE SPACE The car back seat protector has a mesh window that increases air circulation and allows your pet to see you, reducing the anxiety caused by long-distance travel for pets. There are also two large capacity storage grids on both sides of the mesh window, which can store pet snacks, toys, and other daily necessities. HIGH QUALITY MATERIALS The dog seat cover is made of 7 layers of high-quality fabric and thickened PP hollow board, combined with TPU waterproof layer, without any odor. The thickened sponge filling makes it softer, fully protecting your car seat from scratches, dirt, and pet drool.