Outdoor Research Helium Bivy is ideal for moving quickly through alpine terrain and wilderness At the same time, excess weight does not slow us down. Don't let the minimalist design fool you making you think that it lacks weatherproofing or functionality. Helium Bivy provides complete waterproofing and maximum breathability thanks to 2 , 5-layer Pertex Shield Diamond Fuse membrane TPU floor lamination and fully bonded construction. We stay nicely dry when we pitch a tent in a variety of conditions and at the same time we do not have to soak in the steam room with accumulated sweat during the humid summer months.

Helium has a clamshell design which ensures a restful night's sleep and the Delrin single pole system acts as a stabilizing structure for the tent itself. The hood unzips in fine weather for added ventilation and impressive stargazing opportunities.. No-See-Um mesh lining prevents biting insects from eating you alive when you sleep with the hood open. Other key features include special straps for securing the sleeping pad Internal mesh pocket and tie-down points to secure the tent in inclement weather.