Three Layers of Different Materials: The surface of the picnic mat is made of polyester, which is soft and breathable and not easy to wrinkle. The middle of the mat is a layer of soft sponge, which is soft and comfortable. The bottom of the mat is made of Oxford cloth, which is wear-resistant, scratch-resistant, and heat-insulating, slightly resistant to water splashes. Machine and Hand Washable: This picnic mat uses ultrasonic lamination processing to bond three layers of material, which is not stitched or sewn, and can be hand-washed or machine-washed for easy cleaning. The edges are fully wrapped with thick straps to effectively prevent tearing. Large Size: The expanded picnic mat measures 78.8" X 78.8", suitable for 4-6 people, while providing enough space for picnic food and other accessories. It is the perfect choice for a picnic with the whole family or with friends and pets. Foldable: The picnic mat can be folded to save space when not in use. After a picnic, simply fold the mat and secure it with the built-in straps for easy carrying. The mat measures only L5.91" x W5.91" x H14.57" when folded. Multi-purpose: In addition to being a picnic mat, this mat can also be used as a beach mat, camping mat, seat mat, children's crawling mat, etc. In addition, this mat is ideal for parks, beaches, sporting events, soccer games, concerts, and hiking.