The windows are made of durable Aqua-View Smoked vinyl allowing for total clarity. The doors open using YKK zippers which are one of the best manufacturers of zippers in the industry. 3 Star Industries also uses marine sewing thread made from selected heat resistant, high tenacity, continuous polyester yarns. The cab’s doors roll away and can be fastened using a supplied strap to allow for an open cab environment when needed. The kit comes complete with self-adhesive Velcro, installation and care instructions.