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Exosphere +4° EL

Synthetic fibre sleeping bag

Art.No. 3704224-2904
Color sage-paprika
Zipper side:


850 g + 65 g Stuff sack
6 liters
220 / 73-90 / 45-56 (H / W / D)
Fill material
Thermo Pro Loft®
Fill quality
+ cuin (IDFB)
Fill weight
Main Material
Thermo Pro Loft®
220 cm
Shoulder width
73-90 cm
Body size up to
- 200 cm
Foot width
45-56 cm
Packed size
ø 16 cm x 31 cm
Minimum temperature
+4 °C


The bluesign® certified shell and lining fabric, and almost all components of this sleeping are made from 100% recycled polyester. ThermoStretch seams, 360° distribution of high-loft hollowfiber fill and shingle construction with 1.3x overlap give this bag excellent sleeping comfort. Practical details like an anti-snag zipper guard and ergonomic foot box together with the hardwearing functional shell fabric make this a lightweight, functional option for mountain use – in extra-long fit (EL).

Your optimal companion for

Bikepacking (5 of 5)
Climbing (4 of 5)
Hiking (4 of 5)
Lifestyle (4 of 5)
Mountain climbing (3 of 5)
Travelling (5 of 5)
Trekking (5 of 5)

  • Ergofoot: increased footroom
  • Attachable
  • Inner pocket for valuables
  • Insulating collar
  • Foot warmer
  • Bodywarmer Microfleece
  • Dryzone: water-repellent material on the head and foot areas
  • Thermo Stretch Comfort seams inside
  • Perfect insulation with shingle construction
  • PFAS free
  • ClimatePartner certified product

Thermo Pro Loft®
In a special thermal procedure, the polyester fibres are processed to create a technical high-performance Thermo ProLoft® insulation fleece. The ideal relationship between durability, weight and warmth is guaranteed by this mix of full and hollow fibres. This combination creates a fleece that is robust, easy-care and easily stowable, whilst also offering excellent warmth insulation at the lowest weight possible. In addition, the synthetic fibres absorb little moisture. Short drying times and outstanding loft volume, leading to efficient warmth retention even in damp conditions, are among its main benefits. In addition, the Deuter Thermo ProLoft® is treated with a thin silicon layer for better filling performance.

  • * D stands for denier. This describes the yarn weight. 600D corresponds to 600 grams per 9000 meters.
  • * PES stands for polyester. PES fibres are very tear and abrasion resistant and hardly absorb moisture.
  • * PA stands for polyamide. PA fibres are extremely durable and abrasion-resistant. They are also characterized by high elasticity and low weight.


+9° C
THE COMFORT TEMPERATURE is based on the lowest temperature at which an ‘average’ woman (25 yrs. / 60 kg / 160 cm) can expect to sleep comfortably in a relaxed position. This range ensures a comfortable sleep, also for inexperienced users.
+4° C
THE LIMIT TEMPERATURE is based on the lowest temperature at which an ‘average’ adult male (25 yrs. / 70 kg / 173 cm) can expect to sleep comfortably in a relaxed position. An experienced user can optimise the insulation qualities by his choice of clothing and further factors.
-9° C
THE EXTREME TEMPERATURE is a survival only rating for an ‘average’ adult woman. They won't be able to sleep, but they will remain alive for six hours without the risk of death by hypothermia. Nevertheless there will still be a risk of other damages (such as frostbite).
tested according to ISO EN 23537

Top features of the Exosphere +4° EL

Large sleeping bags (for tall people)

Large sleeping bags (for tall people)

Our Large sleeping bags guarantee a good night’s sleep for tall people!
PFAS free

PFAS free

This product is free from PFAS (per-and polyfluoroalkyl substances). PFAS have water, dirt and grease repellent properties but they are persistent chemicals and harmful to people, animals, and the environment.
Instead, deuter uses durable water-repellent finishes (DWR) that are environmentally sound and harmless to human and animal health, and free from these ‘forever chemicals’.
ClimatePartner certified product

ClimatePartner certified product

By adopting more materials and technologies that have a smaller carbon footprint in our collections we are taking positive steps toward reducing our CO² emissions. But despite our greatest efforts, it’s impossible to make products climate neutral. And so, we’ve teamed up with Climate Partner to offset any unavoidable CO² emissions. From now on, the volume of emissions released by the production and transport of any ClimatePartner certified deuter product purchased will be compensated for through voluntary offsetting and targeted investment in select social and climate protection projects. More information.


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