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Ships in 24 hrs
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Easy returns
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Lifetime Warranty*
Frequently bought together
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Ultralight Pillow
$29.99
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Insulated Sleeping Mat (R4)
$149.99 $178.99
ALL ALTON PRODUCTS ARE COVERED BY A LIFETIME WARRANTY.* CLICK HERE TO LEARN MORE.
ALL ALTON PRODUCTS ARE COVERED BY A LIFETIME WARRANTY.* CLICK HERE TO LEARN MORE.
ALL ALTON PRODUCTS ARE COVERED BY A LIFETIME WARRANTY.* CLICK HERE TO LEARN MORE.
ALL ALTON PRODUCTS ARE COVERED BY A LIFETIME WARRANTY.* CLICK HERE TO LEARN MORE.
Explore Product Features
DownTek™ PFC-Free Down
DownTek™ PFC-Free Down
Built for Real-World Warmth
Built for Real-World Warmth
Ideal Warmth-to-Weight Ratio
Ideal Warmth-to-Weight Ratio
High-Quality Construction
High-Quality Construction
Specifications
| Dimensions | 207cm (Length) × 82cm (Shoulder) × 29cm (Width Foot) × 29cm (Height Foot) |
| Material (Shell) | Ripstop Nylon with C0 DWR Coating |
| Material (Fill) | 850 Fill Power DownTek™ RDS PFC-Free Water Repellent Down |
Fill/Packed Weight
| 0°C | 390g/910g |
| -5°C | 505g/1044g |
| -10°C | 625g/1170g |
Packed Dimensions
| 0°C | 25 × 15 × 15cm |
| -5°C | 26 × 16 × 16cm |
| -10°C | 27 × 17 × 17cm |
What's included
1 × Ultralight Sleeping Bag
1 × Ultralight Compression Sack
1 × Down Storage Sack
Industry-Leading Water Repellency
Traditional down struggles in wet conditions. But this isn’t traditional down. Filled with DownTek™ PFC-Free Water Repellent Down that utilises bluesign® approved chemistry to achieve unprecedented levels of water repellency that stays dry 10x longer than untreated down. This means that your Sleeping Bag’s insulation retains full loft without wetting out, even when exposed to moisture. As an extra layer of protection, the durable ripstop nylon shell fabric is treated with a PFC-free water-resistant coating. Together, this results in an Ultralight Sleeping Bag that delivers reliable warmth in the most challenging environments.
Thoughtful Design, Long-Lasting Performance
The Ultralight Sleeping Bag has been carefully designed to maximise warmth without adding weight or bulk. The differentially-cut box-wall baffles help to prevent cold spots, while the mummy shape efficiently retains heat, but the square footbox provides some extra space to spread out. The adjustable hood and 3D draught collars at the neck and along the zipper line block heat loss through critical areas. Each bag is overstuffed by 15-20%, offsetting the effects of down loss over time so your Ultralight Sleeping Bag can be relied upon to deliver warmth and comfort, season after season.
Proven Warmth Ratings For Wilderness Conditions
Alton’s Ultralight Sleeping Bag has been used on demanding expeditions across Australia, New-Zealand, and abroad. It’s available in three ISO 23537-1:2022 certified temperature ratings, 0ºC, -5ºC, and -10ºC, that have been independently tested to guarantee accuracy. In keeping with industry standards, the ratings specified here are the lower limit, but we recommend choosing an Ultralight Sleeping Bag with a lower limit that is several degrees warmer than the lowest temperatures you expect to encounter. For more information on choosing the right warmth rating for your needs, please refer to our detailed guide to understanding the ISO standard here.
High-Performance Gear at a Fair Price
As an independently owned and operated Australian business, our priority is serving you, our customer – not lining shareholders’ pockets. That frees us up to focus on what we do best: building quality gear that performs in the wild, without taking shortcuts or over-inflating prices. Every product is designed, tested and produced to the highest quality standards, but by cutting out the middlemen and keeping our team lean, we’re able to skip the markups so you get high-performance outdoor equipment for up to 40% less than our big brand competitors. And to show you just how seriously we take our commitment to quality, all Alton gear is covered by the All Good Guarantee, a Lifetime Warranty* against defects.
