ShelterLogic Alumi-Max Pop-up Canopy Ultra Durable MAX Weight Polyester 500 Denier fabric is treated with added fade blockers for ultimate UV protection Sewn in hook and loop fasteners keep panels tightly attached to frame legs and neat looking 50+ UPF Ultimate UV protection - blocks up to 98% of harmful UVA and UVB rays Sturdy Zippered side panel zips up and down to allow for easy entry or to increase airflow Mix and match to create a completely enclosed Pop-Up canopy (canopy not included)