Polycarbonate does a good job in UV protection. The feel of the aluminum frame seems decent, adding to the overall build quality. Standard quality materials used here, nothing less. Materials like aluminum and polycarbonate have been used, both meeting my expectations. It’s lightweight but strong, thanks to the aluminum. Satisfactory materials, they've met my initial expectations. The aluminum frame lends a sturdy feel to the entire structure. The quality of the polycarbonate panels seems acceptable, serving its purpose well. Durable is the word I’d use to describe the polycarbonate.