Professional marine grade 11 ounce polyester canvas that is completely waterproof, puncture resistant, tear resistant and abrasion resistant, Winter season won*t stand a chance against our 30 mil tinted Aqua-View Vinyl door windows and rear window * they*re crack-resistant all the way down to -20?, Roll-away doors and windows allow you to take your doors with you and stow them away when not in use. No more hassle - time to travel with ease., Full length double pull YKK marine grade zippers, Includes all the hardware, installation and care instructions