If you’re building a backstop for your archery targets you’re going to want a good netting material that flyer arrows won’t penetrate. I don’t recommend using a netting backstop if you plan on shooting field tip arrows with a bow above a 40 lb draw weight. But for your average backyard target shooting, this worked the best for us.
I recommend the BSN Archery Net (link to Amazon). They advertise this netting for any bow that shoots below 45 lbs for indoor and outdoor use. We have only used this outside, and it has stood the test of time. Originally we were worried about the weather affecting the material, but that has not been the case.