Material Needle-punched cotton, pongee fabric, non-woven cotton, Oxford cloth. Weave type 210D Oxford Fabric, Polyester Pongee Weave. Weave Type 210D Oxford Fabric, Polyester Pongee Weave. 6-Layer Composite Craft: This picnic mat features a 6-layer premium build,including 80g thick needle-punched cotton, a double lotus-leaf water-repellent layer, a soft cozy layer, 90gms polyester pongee, tear-resistant color-locking layer, and a reinforced washable layer.