Meteor 4 Footprint Sierra Designs Footprints are made of 68D polyester taffeta (1800mm PU/WR/FR) and provide a perfectly sized protective tarp to utilize beneath Sierra Designs' tents to reduce wear and tear on the tent floor. Materials Fabric: 68D Polyester Tafetta, WR/PU1800mm, FR CPAI84 Tech Specs Weight: 12.3 oz / .35 kg Dimensions: 87" x 82" / 221cm x 208cm