1. be made of super EVA material with the feature of odorless, no toxicity, corrosion-resistant, environmentally protection. it is good ideal for pet?s health and comfort. 2. The EVA material is high impact tensile strength, well-elastic, flexible and waterproof, it?s foldable and washable, easy to be cleaning. 3.the carry equipped with soothing padded handle, adjustable padded shoulder strap, it?s easy to be carried. 4. the special ventilated design with four see-in mesh windows on sides, the bottom with PE board.