Chameleon Enclosures come in two sizes, one for 2 Passenger Track systems and another for 4 Passenger Track Systems. They come in two colors, Black or a Linen Color. These are full enclosure systems that connect with hooks. This a RedDot AllGaurd Fabric. What does that mean? This means the highest of standards with regards to durability, weather resistance, fade resistance, and easy to maintain. The Chameleon design has removable interchangeable valances and patented sleeve attachments. The Color Match Valance Kit is included. The RedDot Chameleon Enclosure is a true high-quality product and look.