Eco-tech material is 100% PVC free. Dual-function layers for added strength weather resistance. Specifically coated for enhanced water protection. Material resists extreme temperatures. Protects your property from dirt, dust, pollen, sap rain. Extra long tie straps for securing against strong winds. Unique pocket vents keep dirt and water out but allows air and moisture to escape. Size: 114 in x 72 in x 30 in.