The Pyramid Nano Mosquito Net Single shelter maximises coverage with minimal weight (only 82grams!) and pack size. They are now 60% lighter and half the bulk of our standard pyramid nets! These new nets use an elasticised hanging cord and elasticised draw cord hem to keep it under your mattress. 15D Ultra-Vis mesh makes for a very light mesh with great visibility and airflow. Ultra-Vis is a 15 denier, 80 hole/cm2 hexagonal Nylon mesh. Being a lighter, more compact mesh than Ultra-Mesh, we use it for our Nano mosquito nets and headnets. It is the mesh we use when packed weight and space are at a premium. We use black Ultra-Vis in our Nano Mosquito Headnets for optimal vision, and grey Ultra-Vis in our Nano Mosquito Nets to strike a balance point between visibility through the mesh, and ensuring the mesh can be seen easily. This model is Permethrin treated, which is an treatment that will daze mosquitos on contact, and on repeated contact the insect will die. The treatment does not harm humans. Permethrin treatment will dissipate with time and washing. Permethrin is a very safe and effective treatment which the WHO recommends for the reduction of Malaria and other vector borne diseases.