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