Excellent, thick plastic. I used this film to cover low metal hoops ( 2 1/2 feet wide, 2 1/2 feet tall) in rows. I buried one side (secured the other side with bricks) and used it as a melon tunnel. (over landscape fabric) as we are in a cold area and growing melons is uncommon. With opening the tunnel to water, and to let air in on hot days, it held up excellent, no ripping or issues with punctures. I am sure I'll be using it again next year as well. I will be purchasing this again as I plan on doing larger hoops. Quick delivery, no problems or issues.