Here's what other sites are saying:
Features of the Mountain Equipment Helium 800 Sleeping Bag Helium 20D outer shell is very light and Highly breathable 766g of 90-10 Pure Duck Down with a minimum fill power of 700 Maximises thermal efficiency Slanted Box-Wall baffles throughout Mid-level side seams 5 Baffle anatomically shaped hood 4 Baffle anatomically shaped and offset foot-box Full length Gemini zip baffle and integrated collar with Lode Lock closure Supplied with waterproof roll-top stuff-sack and storage cube
- Moosejaw refers to the men's version
Part of Mountain Equipment's Helium collection of lightweight, alpine-inspired bags, the Helium 800 Sleeping Bag maximizes warmth-to-weight when you're sleeping outside in cold, dry conditions inherent to high-altitude climates. Mountain Equipment rates it down to 3-degrees Fahrenheit, ensuring you'll stay toasty in sub-freezing temperatures at higher altitudes and overnight outings in wintertime. 700-fill pure duck down insulation provides thermal efficiency on those freezing nights at altitude and ensues compressibility when pack space is a premium commodity, such as extended backcountry missions. The Helium 20D shell fabric shaves excess bulk from this sleeping bag and breathes well overnight--all without sacrificing much in the way of durability. Slanted box-wall baffles prevent down migration issues and provide thermal efficiency to keep cold spots from stealing precious body heat. Additionally, you'll find a full-length Gemini zip baffle and integrated collar with locking closure to prevent heat loss when temperatures plunge overnight.
- Backcountry.com refers to the men's version
The Mountain Equipment Helium 800 is perfect for backpacking and trekking in cold but dry conditions.
- CampSaver.com refers to the men's version
The Mountain Equipment Womens Helium 800 Sleeping bag is ideal for when space is at a premium and weight an important concern the reduced pack size and low weight of a Helium bag makes it the perfect companion for your trip. -- Womens Specific Cut-- Alpine Fit with tapered lower leg for improved thermal efficiency and weight reduction.-- 4 baffle trapezoid foot piece for excellent down control and loft with low weight.-- 5 baffles and anatomical fit provide high levels of warmth and down control with low weight.-- Solus collar for optimum lightweight insulation with down draft tubes.-- Slanted Box Wall construction offers a stable and superlight structure with excellent stability and down control.-- 30g baffle walls for down control and structure.-- length side zip with anti snag baffle-- Supplied with lightweight stuff sack
- OMCgear refers to the men's version
When temperatures dip into the teens and you're hunkered down on a windy ridge, the Mountain Equipment Helium 800 down sleeping bag keeps you warm from head to toe with its high-quality design.
- REI refers to the men's version