Fabric: 300D polyester with PU lining, which is 100% waterproof and able to block 99% UV sun rays. CPAI-84, CPAI-701 fire certification.DIMENSION: Sidewall measures 118x118 Inches, fit for most 10x10, 10x20 Feet Straight Leg pop up canopy on the market.EASY, FIRM AND RELIABLE INSTALLATION: Fit securely to your canopy with Velcro Straps on top to attach to canopy trusses, 8 Velcro Tabs to strap around frame legs for single wall use.