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We're working out what we think - we'll add our view here!
Grüezi says:
The "DownWool Summer 2.0" is the ideal trekking and biking sleeping bag for the best vacation time, from late spring to early autumn, offering an excellent balance between insulation, weight, and pack size.
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 Extreme Light 2.0 | 8C Sleeping Bag, we'll add our comments here in due course.
- Reviewed by Ultralight Outdoor Gear
Features
- Pillow Compartment: Slide a fleece jacket, for example, into the pillow compartment to create a non-slip pillow in the sleeping bag.
- Adjustable Hood with Face Baffle: The thermal collar adapts perfectly to the shape of the head. When it's cold, only a small face opening remains, reducing heat loss from the face.
- Inner & Outer Pocket: For valuables and items you prefer to keep close by.
- Two-Way Autolock Zipper: The zipper can be opened and closed from either end, inside or outside. The autolock system prevents accidental opening.
- White Zipper: Easier to find the zipper in the dark.
- Anti-Snag Zipper with Reinforced Band: The zipper operates smoothly without snagging the outer fabric.
- Zipper with Underlay Cover: Prevents heat from escaping and eliminates cold spots.
- Foot Ventilation System: The innovative zipper path allows feet to rest comfortably on top of the sleeping bag, allowing excess heat to escape.
- Preformed Foot Box: Enough room to wiggle toes while lying down.
- Feater Loops: Allows for the addition of a heated foot sack (Feater - The Feet Heater).
- Chamber Construction: H-chamber construction, V-shaped (on the top), preformed foot area with multiple chambers.
- Includes: Sleeping bag, compression sack, storage bag.
Specifications
Temperature Rating
Temperature range according to EN 23537-1
- Comfort: 2°C (36°F)
- Comfort Limit: -3°C (27°F)
- Extreme: -20°C (-4°F)
Regular Specs
- Weight: 775g (excludes storage bags)
- Size: Mummy sleeping bag measuring 200 x 77 x 50 cm (suitable for heights up to 178 cm. For more comfort, those over 170 cm may prefer the next size up).
- Filling weight: 330g
- Packed size: 17 x 29 cm, compressed 17 x 17 cm
- Pack volume: 6.5 l, compressed 4 l
- Colour: Cactus
Long Specs
- Weight: 914g (excludes storage bags)
- Size: Mummy sleeping bag measuring 200 x 77 x 50 cm (suitable for heights up to 178 cm. For more comfort, those over 170 cm may prefer the next size up).
- Filling weight: 330g
- Packed size: 17 x 29 cm, compressed 17 x 17 cm
- Pack volume: 6.5 l, compressed 4 l
- Colour: Deep Forest
Material & Construction
- Outer and inner fabric: Non-coated, ultra-light, durable, wind and water-resistant recycled 20 Denier 380T nylon (100% polyamide).
- Filling: 330 g DownWool® composed of 70% high-quality down (90/10 with a fill power of at least 700+ cuin) and 30% mechanically refined wool.
- Material Label: Shell 100% polyamide, filling 70% down/30% wool - contains non-textile parts of animal origin.
- Usage: The ideal companion for summer trekking and biking tours, camping & caravanning, hut stays, tenting, or the Camino de Santiago.
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
