Rab Ascent -12°C Sleeping Bag - L-ZIP
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BlacksRab Ascent Down Sleeping Bag -12°C Tempest Blue/Maya Blue
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£329.00
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TisoUnisex Blue Rab Ascent -12°C Sleeping Bag - Sleeping Bag - Size L-Zip
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Product Information
Full details
The Rab Ascent -12°C Sleeping Bag is designed for adventurers who need reliable warmth and comfort during cold-weather expeditions. Its key benefit is excellent heat retention thanks to high-quality down insulation and thoughtful design features, making it suitable for sub-zero temperatures. A potential caveat is its weight, which may be a consideration for ultralight backpackers. This bag offers a mummy shape for efficiency, an anatomically shaped footbox for comfort, and is constructed with durable, water-resistant materials.
All features
| Material | Nylon |
|---|---|
| Model Part Number | 003973508 |
| Brand | Rab |
Extended Product Information
FAQs
What is the 'Limit' temperature rating?
The 'Limit' temperature rating of -12°C is the lowest temperature at which a standard user (in a curled position) can sleep comfortably for eight hours. It is calculated for men and is an indication of the bag's performance under specific test conditions.
How should I store my sleeping bag long-term?
For long-term storage, always use the large, loose storage sack provided. Avoid storing the bag compressed in its stuff sack, as this can permanently damage the down's loft and insulating properties.
Can I wash this sleeping bag in a home washing machine?
Yes, if you have a front-loading washing machine with a large enough drum. Use a down-specific detergent and a gentle cycle. Avoid top-loading machines with agitators, as they can damage the bag.
How do I ensure maximum warmth when using the bag?
Ensure the bag is fully lofted before getting in. Cinch the hood and neck collar tightly to prevent heat loss. Use a sleeping pad with a suitable R-value, and consider wearing a warm hat and base layers inside the bag.
What is the difference between the stuff sack and the storage sack?
The stuff sack is a compact compression bag designed for packing the sleeping bag for transport. The storage sack is a larger, breathable bag intended for long-term storage to preserve the down's loft.
Is the hydrophobic treatment safe for the environment?
Yes, the Rab Ascent uses Grangers fluorocarbon-free hydrophobic finish, which is environmentally friendly compared to traditional DWR treatments.
Troubleshooting
Sleeping bag feels damp or clammy
Ensure the bag is fully dry before use and storage. Condensation can occur inside the bag; ventilate by partially unzipping if needed. If the bag's performance has degraded over time, it may need to be washed and thoroughly dried.
Down is clumping and losing loft
This can happen if the bag gets wet or is stored compressed for too long. Gently tumble dry on low heat with dryer balls to help break up clumps and restore loft. Ensure the bag is completely dry before next use.
Zipper is difficult to move or snags
Ensure the fabric is clear of the zipper teeth. Use the anti-snag inserts and move the zipper slowly and deliberately. Lubricating the zipper track with a wax or silicone-based product can help.
Hood or collar doesn't seal effectively
Tighten the drawcord fully. Ensure the 3D neck collar is correctly positioned around your neck. Check that no part of the hood or collar is caught inside the sleeping bag liner.
Pros and Cons
Pros
- Excellent warmth-to-weight ratio for its temperature rating.
- Durable construction with quality materials.
- Comfortable fit with an anatomical footbox and hood.
- Water-resistant treatment on down and shell enhances performance in damp conditions.
- Thoughtful features like internal pockets and included stuff sacks.
Cons
- Weight may be a factor for minimalist backpackers.
- Requires proper care to maintain loft and water resistance.
- Full-length zipper might be less desirable for some users preferring 3/4 length.
- Temperature ratings are subjective and can vary based on individual physiology and conditions.
Setup, Compatibility & Care
Setup: Unpack the sleeping bag from its stuff sack or storage sack. Gently shake it to help the down insulation loft. For maximum warmth, ensure the hood and collar are adjusted snugly around your head and neck after getting inside.
Compatibility: The bag is designed for use in temperatures down to -12°C (limit). It is compatible with sleeping pads of standard width. The YKK 3/4 length zip allows for ventilation if the temperature rises unexpectedly.
Care:
- Storage: Store the bag loosely in its included large storage sack (not the compression stuff sack) in a dry, well-ventilated area. Avoid storing it compressed for extended periods, as this can damage the down's loft.
- Washing: If washing is necessary, use a front-loading washing machine on a gentle cycle with cold water and a down-specific detergent. Do not use fabric softeners or bleach. Rinse thoroughly multiple times to remove all detergent.
- Drying: Tumble dry on a very low heat setting with clean tennis balls or dryer balls. This helps to break up any clumps of down and restore loft. Continue drying until the bag is completely dry, which may take several hours. Ensure no dampness remains before storing.
- Cleaning Stains: For minor stains, spot clean with a damp cloth and mild soap, then rinse and air dry.