Cat Carrying Bag Space Pet Backpack Breathable Portable Transparent BackpackSelected MaterialThe Cat Bubble Backpack is made of high quality PC, Oxford clothr material, and we haves also upgraded it many times, which is more and wear resistant and can be reused many times Breathable ZipperBecause it has a side ventilated zipper to allow air to circulate inside the Cat Backpack Carriers, and there are three vent holes on the front, so pets can breathe freely Mesh HarnessCat breathable padded shoulder straps and mesh harness,