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Hand-filled in Derbyshire, UK Hand-filled in Derbyshire, UK, the Alpine Sleeping Bag uses 650 fill-power, R.D.S certified European duck down for maximum loft and insulation. By filling the sleeping bag in the UK, Rab prevents any pre-compression in transport, preserving the down’s natural loft for superior warmth and comfort for your first overnight adventure.
What is the Alpine 0°C / 32°F?
It's a slim, mummy-shaped technical down sleeping bag that offers the ideal blend of comfort, packability, and performance. Created from Pertex® Quantum ripstop and filled with 650FP duck down, it's ideal for spring and summer camping adventures.
Please note: the printed temperature rating on this sleeping bag is incorrect due to a first-batch labelling error. The correct rating is shown on this product listing and the product's swing tag. Please be aware that the sleeping bag's fill and performance are not affected and are as advertised.
What is it made from?
Insulation: This sleeping bag is filled with 305g of 650 fill power, R.D.S Certified, European Duck Down for maximum loft (fluffiness) and insulation.
European Duck Down is fantastic quality down. It has smaller clusters than Goose Down, slightly reducing the warmth-to-weight ratio without impacting the quality of the bag.
The down is treated with a Grangers fluorocarbon-free Hydrophobic finish, which adds light water-resistance to the down itself.
Grangers Down Defend is a bluesign-approved hydrophobic treatment that helps keep down lofted in damp conditions. Once treated, the down is over 375 times more durable than untreated down, extending its lifespan. It's also much more water-resistant, delivering a shake test result of 15,000 minutes for virgin down, whilst also improving the down's fill power by up to 5%, overall keeping you warmer for longer.
Can't quite catch the lingo? Here's a quick breakdown.
Fill power - Fill power measures the warmth and efficiency of the down, alongside its ability to loft (fluff up). A rating of 650 fill power means that 1oz of this down fills 650 cubic inches of space when fully lofted.
R.D.S - The Responsible Down Standard ensures that the down is sourced from happy birds who haven't been plucked and have been well cared for.
Hydrophobic - Hydrophobic down dries out and lofts more quickly than untreated down, resisting moisture from sweat and condensation that may build up when you're catching z's in the bag. Fluorocarbon-free Hydrophobic finishes don't use harmful chemicals that cause damage to the environment, an excellent feature for more eco-conscious adventurers.
Outer fabric: The outer shell of this sleeping bag is constructed using a lightweight 20D Pertex® Quantum nylon ripstop material. Pertex® Quantum is a tightly woven, lightweight fabric that is fully windproof, providing protection against blustery conditions and aiding extra warmth retention. It's also surprisingly durable for its weight without impacting the down's ability to fully loft.
The material is finished with a fluorocarbon-free DWR (durable water repellent) coating to provide protection from light moisture and protect the filling in cold, damp environments.
Lining: The sleeping bag is lined with 20D Recycled Nylon to provide a lightweight, breathable layer that still feels soft and cosy on the skin, that's still robust enough to deal with a lifetime of use.
What are its features?
Starting with the bag's structure, the L.O.F.T™ baffle construction features offset baffles to prevent down from migrating inside the chambers and make the down more effective. This reduces cold spots across the bag, allowing Rab to achieve the same warmth with less down, creating a lighter and more packable sleeping bag.
Sidewall baffles provide maximum loft and comfort for side sleepers, while a tapered mummy shape provides optimal thermal efficiency and a compact pack size.
A roomy, anatomically shaped footbox offers freedom of movement around the feet and a more relaxed sleeping position for maximum comfort, allowing the shape of the bag to feel less restrictive without adding much weight or bulk to the overall design.
An anatomically fitted hood with drawcord closure allows you to cinch it in close on cold nights for maximum thermal efficiency, whilst a 3D shaped synthetically filled neck collar helps to trap heat inside the sleeping bag.
The sleeping bag is fastened with a two-way 3/4 YKK® anti-snag main zip with an insulated baffle running alongside to prevent cold from entering the bag via the zip. Anti-snag zip inserts and an anti-snag internal zip guard help to prevent the fabric from getting caught and snagging or tearing on the zip.
A zippered internal stash pocket provides a convenient home for smaller items you want to keep close to hand, such as a mobile phone, face mask or earplugs, ensuring they don't get lost at the bottom of the bag during the night.
Two storage sacks are provided with this sleeping bag; one is a larger zipped storage sack with a water-resistant base for optimum home storage, giving the back more breathing room to protect the down and help increase its overall performance and longevity. The other is a drawcord stuff sack for compact storage on the move with minimal bulk. Stuff sacks are literally meant to be stuffed! So do your best to cram your sleeping bag inside instead of folding the bag neatly away. Stuffing randomly helps to prevent folds and creases in the down, which will prevent cold spots and gaps from developing over time, increasing the lifespan of the bag.
Features
- L.O.F.T™ baffle technology reduces down migration, optimising heat retention and pack size
- Sidewall baffle construction for increased down loft and greater side sleeping comfort
- Anatomically fitted hood with drawcord adjustment to maximise comfort and heat retention
- Internal cordlocks positioned below the collar bone for greater side sleeping comfort
- YKK® zipped internal stash pocket
- 3D shaped neck collar with recycled Stratus™ insulation
- 2-way YKK® 3/4 length main zip with synthetic-filled baffle
- YKK® anti-snag zip insert and anti-snag internal zip guard
- Anatomically shaped foot box for relaxed sleeping posture
- Drawcord stuff sack included
- Zipped storage sack with water-resistant base for home storage
- Hand-filled in Derbyshire UK
- Tapered mummy shape
L.O.F.T™ Baffle Construction This clever offset baffle construction prevents down from migrating into the chambers, reducing cold spots across the bag. It allows Rab to achieve the same warmth with less down, creating a lighter, more packable sleeping bag.
Sidewall Baffle Construction The sleeping bag features a sidewall baffle that runs around the edge of the sleeping bag to provide maximum loft and comfort for side sleepers.
Anatomically Shaped Footbox A roomy, anatomically shaped footbox provides additional space around your feet for a more relaxed sleeping position, allowing the bag's mummy shape to feel more comfortable and less restrictive.
FAQ
What temperature range is the Rab Alpine 0 °C / 32 °F sleeping bag suitable for?
This sleeping bag has an ISO comfort temperature around 5 °C and a comfort limit of 0 °C (32 °F), making it ideal for spring and summer camping and alpine trips.
What type of insulation does the Alpine sleeping bag use?
It's filled with 650-fill-power European duck down that’s been treated with a fluorocarbon-free hydrophobic finish, which improves moisture resistance and retains loft.
How packable is the Rab Alpine sleeping bag?
With its tapered mummy shape and high-efficiency down fill, the bag remains compact and packable, ideal for backpacking and mountain adventures where weight matters.
What activities is the Alpine 0 °C / 32 °F sleeping bag best for?
It's best for spring and summer backpacking, trekking and alpine camping, offering lightweight warmth for cool mountain nights without adding bulk to your pack.
How does the Rab Alpine 0 °C sleeping bag compare with other alpine down bags?
Compared to previous models like the Rab Alpine 600 Down Sleeping Bag or Rab Alpine 800 Sleeping Bag, the 0 °C model offers a balanced warmth-to-weight ratio that’s lighter and more packable for spring/summer mountain trips while still delivering dependable insulation.