Instruct: Classify the given review as either positive or negative.
Query: Lightweight and effective

I took some of these nets on a tour of Zimbabwe, where, especially by the rivers, the mosquitoes were thick. We were in malaria zone and I had one of these over my son's pack n play (the single fit nicely and stayed on passively), so I was relying on them. I can say safely that we had no bites when we used the nets and there was an audible squad of mosquitoes circling us in the night. Other reviewers commented on the size of the holes in these nets, but mosquitoes certainly were not able to make it through our net. Paracord was helpful in creating a comfortable shape around our heads and arms.We did pick up some permethrin and coated the nets before the trip. Then, on the trip we hosed a little All Terrain on the nets before we put them up. Neither took long and the results were no bites (can't say the same for family members who were less stringent). Happy travels.