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We're working out what we think - we'll add our view here!
Grüezi says:
From spring to autumn is the best season for trekking tours, biking, backpacking, huts and camping. 3 season sleeping bag "DownWool Subzero 2.0" is the perfect companion here.
The problem with classic down: moisture & overheating
Down is the lightest and most insulating natural material—and extremely compressible. However, traditional down has its weaknesses: it loses its insulating properties in high humidity and can lead to overheating. This poses a real risk to comfort and rest, especially when traveling in changeable climates. This is precisely where DownWool® comes in—the intelligent evolution of down. The award-winning DownWool® sleeping bags are uniquely designed and offer solutions for precisely these weaknesses.
Heat output even at high humidity
Unlike conventional down, DownWool® retains its insulating properties even in high humidity—and even increases them by up to a third. DownWool® puffs up, trapping even more warmth. Even at 90% humidity, it remains pleasantly warm—ideal for both dry and cold, wet conditions.
Effective temperature compensation – no heat build-up, no freezing
The innovative filling consists of 70% RDS-certified animal welfare down and 30% wool from the Alps – a natural combination with high-tech functionality. DownWool® actively regulates temperature, constantly returning to skin temperature. This prevents overheating and avoids overcooling. At the same time, it absorbs moisture and wicks it away. This creates a pleasantly dry sleeping environment and a significantly wider comfortable temperature range – ideal for changeable weather.
Comfortable cut – more freedom of movement, less cold
For restful sleep, the body needs freedom of movement. The ergonomic cut of DownWool® sleeping bags offers just that: space for sleeping positions such as side sleeping or turning, even in a mummy position. The slightly more generous fit prevents cold spots because the filling is not compressed – for consistently pleasant warmth and maximum sleeping comfort.
Best sleep quality:
The natural climate-balancing insulation contributes to falling asleep faster, sleeping more deeply and overall longer, more restful sleep.
And best of all: light & compact.
In addition to their high functionality, DownWool® sleeping bags are amazingly light and packable – for more space in your backpack and maximum comfort on the go.
OEKO-TEX® STANDARD 100 certified:
Every part of the Grüezi bag® products has been tested for harmful substances and is therefore harmless to human health.
Our Verdict
We're working out what we think about Grüezi Bag's DownWool Subzero 2.0 | -8C Sleeping Bag, we'll add our comments here in due course.
- Reviewed by Ultralight Outdoor Gear
Features
- Pillow compartment: If you put a fleece jacket, for example, into the pillow compartment, the sleeping bag has a non-slip pillow.
- Adjustable hood with Face Baffle: The thermal bulge adapts perfectly to the shape of your head. When it's cold, only a small hole remains open, reducing heat loss from the face.
- 3D thermal collar closes automatically in the zipper area, so that no cold bridge is created in the zipper area.
- Drawstring pocket: To ensure that the drawstring on the warm collar does not get in the way, it is safely stored in a simple drawstring pocket.
- Inside & outside pocket for valuables and things you prefer to keep close to you.
- Two-way zipper: Can be operated from both ends and inside/outside.
- Auto-Lock prevents accidental opening.
- Black zipper: Cooler look and better camouflage in the dark.
- Underlined Zipper cover prevents cold bridges so that heat cannot escape.
- Zipper with anti-snag zipper and lined robust webbing: This makes it even easier to operate the zipper without pinching the outer fabric.
- Foot ventilation system: The innovative zipper design allows your feet to rest comfortably on top of the sleeping bag and excess heat to escape.
- Pre-shaped foot box: When lying down there is enough space in the sleeping bag to point your toes.
- Feater loops: A warming hip bag with heating element (Feater - The Feet Heater) can be installed additionally.
- Chamber construction: H-chambers, V-shaped (on the top), pre-shaped foot area with several chambers
- Delivery: Sleeping bag, compression pack, storage bag.
Specifications
Temperature Rating
Temperature range according to EN 23537-1
- Comfort: -2°C (28°F)
- Comfort Limit: -8°C (18°F)
- Extreme: -26°C (-15°F)
Regular Specs
- Weight: 946g (excludes storage bags)
- Size: Mummy sleeping bag measuring 200 x 77 x 50 cm (Suitable for a body height of up to 178 cm in terms of weight. However, those who prefer more comfort can choose the larger size from a body height of 170 cm.)
- Filling weight: 399g
- Packed size: 18 x 31 cm, compressed 18 x 20 cm
- Pack volume: 8 l, compressed 5 l
- Colour: Autumn Blue or Black Edition
Long Specs
- Weight: 1104g (excludes storage bags)
- Size: Mummy sleeping bag measuring 215 x 80 x 50 cm (suitable for a body height of up to 188 cm in terms of weight. However, those who prefer more comfort can choose the larger size from a body height of 180 cm.)
- Filling weight: 513g
- Packed size: 20 x 32 cm, compressed 20 x 23 cm
- Pack volume: 10 l, compressed 7 l
- Colour: Pine Green or Black Edition
Material & Construction
- Outer and inner fabric: Material: Uncoated, ultra-light, durable, wind-resistant and recycled 20 denier 380T nylon – comfortable against the skin.
- If required, priming or impregnation.: Permanently water-repellent, silicone-free and based on bio-based raw materials (BeSoDRY by CHT) for optimal weather protection and maximum environmental compatibility.
- Colors: Sustainable BEMACID dyes (C2C by CHT), biologically safe, Cradle to Cradle® and bluesign® certified.
- Filling: 399 g DownWool® made from 70% high-quality duck down (90/10 with fluffiness 700+ cuin) and 30% mechanically finished wool
- Material labeling: Shell 100% polyamide, filling 70% down/30% wool - contains non-textile parts of animal origin.
Help & advice:
- How to Wash and Care for Your Down Jacket and Sleeping Bag
- The Ultimate Guide to Lightweight Sleeping Bags
- Time-Saver Guide to Choosing a Sleeping Bag
- Our Gruezi Sleeping Bag Range Explained
- About Gruezi Bag and DownWool® Sleeping Bags
- Gruezi Bag Downwool 2.0 Sleeping Bags
- The EN13537 Standard
- All About Down
