The Titanium Goat Kestrel Bivy is a solo bivy sack with a full-length zipper, so getting in and out doesn't mean unzipping the whole shell from head to foot along one side. The floor is a waterproof 30D silnylon, while the top uses a tougher but only water-resistant 20D nylon — a combination that trims weight but assumes a tarp or well-sheltered site will handle the bulk of any rain.
The built-in bug net can be tied up overhead, freeing extra room and airflow on clear, bug-free nights without having to remove the netting entirely. The breathable top also cuts down on condensation, typically the biggest issue with bivies since breath moisture otherwise collects directly on the fabric above your face.
At 221 cm long with a 76 cm chest girth, it accommodates most sleeping bag and pad combinations, including bulkier winter bags. At just under 193 g, it ranks among the lighter bivies on the market — usable as standalone shelter in settled weather or as a backup layer under a tarp when the forecast turns.