Ergonomic head

Material: Proprietary 40D 1

Liner: 67% acrylic

Whether the trail’s conditions are crust

puddle filled or otherwise

Outdoor Research Alpine AscentShell Bivy Thermarest Ergonomic headThe Alpine AscentShell Bivy is constructed to enable solo adventuring and fast and light movements in the mountains and beyond. Building on the reputation set by the cult classic Alpine Bivy, this new version leverages AscentShell x Pertex technology for a drastically improved breathability rating, leading to less condensation and more comfortable sleep. The step in opening allows you to step directly into your bed without the need to shimmy into the