OUTDOOR RESEARCH Interstellar Bivy Solaria


Quick Overview

The Interstellar bivy is a four-season shelter with AscentShellâ„¢ technology for superior breathability, waterproofness, and lightweight comfort

The Interstellar AscentShell™ Bivy is the waterproof, versatile bivy choice for adventurers looking for a little something extra out of their shelter.

A newly designed side entry makes getting in and out of your shelter faster and easier than ever before, while innovative zipper design and built-in sombrero allow you to sit up and perform tasks (like cooking and packing) without stepping outside.

Since 2016, Outdoor Research’s proprietary AscentShell™ technology uses an electrospun process to create a 3L construction that breathes faster, weighs less, stretches more, and far surpasses the comfort of traditional waterproof membranes.

Learn more about the science behind our breathable waterproof AscentShell technology right here.


  • Delrin® Single-Pole System
  • Reflective Logo and Trims
  • Glow-in-the-Dark Zipper Pulls
  • Large Side Opening
  • One Guy Line Loop
  • Two Stake Loops
  • High Volume Toe End
  • Multi-Configuration Allows you to Sit
  • Up and Organize Gear While in Bivy
  • Weight with pole: 596g 
  • Weight without pole: 543g


  • Waterproof
  • Breathable
  • Air Permeable
  • Fully Seam-Taped
  • Large No-See-Em Mesh Screen


  • 3L AscentShell
  • 20D Nylon
  • 12D Polyester backing with a 40D TPU-laminated floor

COVID Update Sept 2021: Aus Post is having major delays across the network.

Standard/Free shipping to major capitals takes 2-5 business days.

Order before 11am - we usually ship the same business day!

Choose Express Post for priority packing and faster shipping.

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