High-performance down jacket for mid-mountain use
The Aegismax G2 fits perfectly between summer gear and heavy expedition equipment. With a certified sub-zero comfort temperature, this warm sleeping bag secures your early spring or late autumn nights. Its high-end filling ensures rapid warming of the interior from the very first minutes of rest, crucial after a long day of hiking in cool conditions.
Technical compartmentalization and ultra-compressibility
The 800-fill power RDS-certified goose down offers one of the best warmth-to-weight ratios on the market. It compresses impressively (occupying only 3.3 liters) to free up precious space in your backpack. The box-baffle construction eliminates cold spots, while the thin iFlex® 15D fabric allows the bag to loft up immediately once unfolded in your tent.
Full baffle construction to prevent cold spots
The internal construction relies on continuous transverse baffles that partition the RDS-certified down across the entire width of the bag, rather than using simple localized stitching points. This structure limits lateral settling of the insulation and the formation of less insulated areas, particularly at the hips and shoulders, two zones especially exposed to contact with the ground in a cold-weather sleeping bag.
Technical components: YKK zip and Duraflex buckles
The zipper uses a #5 YKK nylon zip, renowned for its resistance to snagging over time, and the adjustment buckles are Duraflex. The Velcro closure, supplied by PAIHO, is treated to not snag the fibers of the surrounding fabric or clothing, a detail that limits premature wear of the outer fabric over the course of use on this trekking sleeping bag.
If you are planning to switch to purely winter conditions and now require massive insulation certified down to -17°C, the Aegismax D5 extreme cold sleeping bag will become essential to secure your nights in the snow.
Doubt about which bag is right for you?
The field guide helps you choose based on skill level, temperature, needs, and weight. Support answers specific questions.
Find my bag Contact supportFrequently Asked Questions
The Aegismax G2 has a comfort temperature of -2°C and a lower limit temperature of -8°C, measured to the EN 13537 standard. These values apply under standard conditions: sleeper in thermal base layers, on an insulated sleeping mat. It is designed for hiking, bivouacking use (3-4 seasons).
The Aegismax G2 is filled with 800 fill power, RDS certified. The Aegismax G2 weighs 1052 g, which places it in the lightweight category.
The lower limit temperature is the lowest temperature at which a reference man can maintain his body heat curled up, according to EN 13537 / ISO 23537-1. It does not correspond to comfortable use: below the limit temperature, the sleeper is likely to suffer from the cold. For real use, the comfort temperature is the main reference.
The minimum recommended temperature is the bag's comfort temperature, measured to EN 13537 / ISO 23537-1. For a 0°C bag, this means a standard sleeper can spend a night without feeling cold at 0°C, provided they use an insulated sleeping mat (minimum R-value of 2 to 3) and wear thermal base layers.
For extreme cold (below -10°C), the most suitable bags combine high-loft down (700 cuin minimum, ideally 800 cuin and above) with a mummy cut that limits heat loss. A sleeping mat with an R-value of at least 4 is essential alongside. For nights between 0°C and -5°C, a good-quality 3-season bag with a 0°C comfort rating is generally sufficient.