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The picnic mat features a 3-layer construction. The top fabric is thickened, the middle layer is soft cotton, and the bottom is durable. It is made of polyester, PVE, and aluminum foil, ensuring sturdiness and good performance.
link:https://www.remotionertech.com/outdoor-mat/picnic-mat/outdoor-waterproof-picnic-mat.html
Outdoor Waterproof Picnic Mat