The Sea to Summit Nano Mosquito Single is a one-person pyramid bug net made from 15D nylon Ultra-Vis mesh with a mesh density Sea to Summit rates at 500 holes per square inch, fine enough to stop no-see-ums along with mosquitoes. At 90 g and roughly 221 × 122 cm, it is built to just cover a sleeping pad rather than as a general-purpose shelter interior.
The asymmetric shape places the peak above the head end rather than centred, giving more usable headroom exactly where it matters for reading or sitting up, while the foot end tapers lower. Instead of a zip, it closes with an elasticised hem that tucks under the sleeping mat — a simpler, lighter mechanism, though entry means lifting and re-tucking the hem each time, a minor inconvenience on nights with frequent bathroom trips.
At 90 g it is light enough to bring along speculatively on trips where bug pressure is uncertain, and its lack of a floor or rain layer means it pairs with a tarp, bivy sack or hammock rather than standing alone.