waterproof cloth. Size:3mx 4m the product uses 1 available cars, trains , ships freight tarpaulin 2 harbor airport terminal station can be used for open storage dumps were covered . 3 can build a temporary open-air barn and covered a variety of crops by 4 can be used for electric power construction site and other sites set up temporary sheds, temporary storage of material. 5 can be processed camping tents and various machinery and equipment outer sheath. the product features and use Precautions 1 waterproof , mildew functionality and lightweight materials , high tensile strength , acid and alkali resistance, high temperature , washing and folding and convenient. (2) The product should be avoided in the course of fast and sharp metal mouth impact. 3 product use if damaged, liquid adhesive patch is available . 4 . The product quality assurance, and good after-sales service for the user . Please tell us the size,thank you.