“When we decided to do reader reviews on military-style bivy shelters, we wanted to give the rest of our audience some insight on what amounts to be a substantial investment in snivel gear. We chose these three bivies because they were anything but cheap.
The Observer Plus, which retails for a little more than $700, features a duel-pole support system at the front opening and is extremely low profile. The Sabre SE, which averages about $500, has an inflatable, Airbeam support system, a large vestibule and light-signature reducing fabric. And finally, the IONOSPHERE, which costs about $200, is a roomy, well constructed shelter that will likely keep you well protected in foul weather…”
Forrás : http://kitup.military.com/2013/11/bivy-review-roundup-expensive.html?ESRC=marine.nl