It's normal to have deep folds after folding for too long. PVC is not a high resilience material, and the slow recovery of pressed wrinkles is a natural property of the material, but the wrinkles are not permanent. Wrinkles will disappear over time. Duration depends on the degree of folding. Unfold the tarpaulin and hang it, it will take about 15 to 30 days to come back flat. The recovery time may be longer for deeper creases. (Reference ambient temperature: 25 ) At the end of the product description, there are methods that will help the Tarpaulin to recover faster, I hope you will find it useful. Material: PVC (polyvinyl chloride). transparency: 100%. Thickness: approximately 0.35mm. Water resistance index: 100%. Weight: 365 g / m². Features: high quality aluminum alloy metal perforations, polyester fiber edge seams, rubber triangle sleeves at the corners, reinforced corners, strong and durable, and can be quick and easy to install. Applications: plant insulation, pergola cover, camping tent, waterproof balcony tent, dustproof, car cover, barbecue tablecloth, mosquito window film, home waterproof cover. It can be used indoors and outdoors . Very useful plastic cover: Keep away from cold, moisture, water, heat, dust, weather. Suitable for balconies, roofs, swimming pools, farms, flower pots, garages, warehouses, shopping malls, parks, restaurants, pavilions and courtyards. Characteristics Multifunctional, waterproof and clear PVC (polyvinyl chloride) tarpaulin can be used for other purposes. For example, furniture, floors, carpets, cabinets, murals, books, and plants can protect cars from dust contamination. The tarpaulin is made of high-quality soft glass and uses technology that can withstand any weather conditions. Strong sunlight, wind, frost and hail will not affect the properties of the material. Tarpaulins are used in places resistant to moisture, dust and weather conditions. Thanks to the use of waterproof materials, whether it is rainy or sunny, the covered material can be kept dry and clean. Product attached with a rope, tied to a tree trunk, shielding a cool place, easy to install and use. illustrate Name: Transparent waterproof tarpaulin. Material: PVC (polyvinyl chloride). Transparency: 100%. Water resistance index: 100%. Thickness: approximately 0.35mm. Weight: 365 g / m². The inside diameter of the rope hole is approximately 12 mm. Distance between two holes: approx. 50 cm. The operating temperature range of the tarpaulin is: about -30 C to 60 C. It will be a bit hard in a low temperature environment below 0 . The product includes Transparent waterproof PVC canopy fabric perforated with rope To notice Because the edge adopts hemming technology, there may be a deviation of 3-10 cm due to different production batches and measuring tools. Large size / too long PVC The tarpaulin will be made by splicing. It is a necessary process for production. We will be very grateful for your understanding. The PVC tarpaulin adopts high temperature machine welding to make the seam 100% rainproof. The degree of refraction is limited by the material. Factors such as lighting and display effects may show a certain color. The views through the Tarpaulin can be slightly distorted and not as effective as real glass. The raw material will inevitably have a slight specific smell. When the tarpaulin is naturally kept outdoors for 2 to 5 days, the smell will disappear. Cleaning method: Wipe with soapy water or wash with warm water, but do not machine wash. A WARM REMINDER 1. If the customer has enough storage space, we recommend storing it in a roll to reduce the appearance of creases. Of course, you can fold it for storage. The next time you use it, it will take longer for the folds to disappear. 2. Method 1: Spray the table with a little water, then spread a tarpaulin over it, and then put a heavy object (e.g. stack of books) on the wrinkled area, and the wrinkled portion will be flattened over time. Method 2: Directly spread the tarpaulin on the table, then place the hot towel over the wrinkled part, and finally press down some heavy objects on the towel. Method 3: Place a towel over the wrinkled part and then iron it with an iron, but be careful not to be too hot (no more than 50 ) so as not to damage the fabric structure. The tarpaulin may smell when ironing, please pay attention to ventilation.