
Waterproofing your sleeping bag stuff sack is a great way to protect your bag from the elements. It is an indispensable tool for backpackers, campers, and outdoor enthusiasts. The stuff sack is a crucial component of gear management, making packing more efficient and protecting your sleeping bag from moisture, dirt, and wear. While some sleeping bags come with stuff sacks, they are not always waterproof. Waterproofing your stuff sack adds an extra layer of protection against wet conditions, ensuring your sleeping bag stays dry. However, some people choose not to use a stuff sack because it can take up more space and be difficult to get the sleeping bag out. Ultimately, the decision to waterproof your sleeping bag stuff sack depends on your personal preferences and the conditions you expect to encounter during your outdoor adventures.
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What You'll Learn
- Waterproofing methods: using a trash bag, waterproof pack liner, or dry bag
- Pros of a stuff sack: keeps your bag compressed and protected from punctures
- Cons of a stuff sack: adds unnecessary weight and takes up more space
- Waterproof stuff sacks: Sea to Summit offers two options with hydrostatic heads over 2000mm
- Alternatives: Rab bags with Neutrino Endurance shells are nearly waterproof

Waterproofing methods: using a trash bag, waterproof pack liner, or dry bag
Waterproofing your sleeping bag stuff sack is a good idea, especially if you are hiking in the rain or expect river crossings. There are a few ways to do this, including using a trash bag, a waterproof pack liner, or a dry bag. Each method has its advantages and disadvantages, and the right choice will depend on your specific needs and budget.
Using a trash bag is a simple and inexpensive way to waterproof your sleeping bag stuff sack. You can use a regular garbage bag, a heavy-duty trash bag, or a trash compactor bag. Simply place your sleeping bag inside the trash bag, and then squeeze out as much air as possible. This method is effective in keeping your sleeping bag dry in rainy conditions, but it may not be suitable for high-risk water crossings. Additionally, trash bags can be used as a clean platform for sorting pack contents and as a container for garbage during and after your hike.
Another option is to use a waterproof pack liner, which is a liner specifically designed to fit inside your pack and keep its contents dry. Some popular options include the Gossamer Gear pack liner and the Zpacks pack liner. These liners are transparent, allowing you to easily locate your sleeping bag inside your pack. They also fit perfectly, eliminating the need for a separate stuff sack for your sleeping bag. Waterproof pack liners are a good choice if you want a lightweight and reliable option that doesn't add bulk to your pack.
Dry bags, such as the Sea to Summit dry bag, are another popular option for waterproofing your sleeping bag stuff sack. Dry bags are typically more durable and reliable than trash bags, but they can be heavier and more expensive. They are available in various sizes, including lightweight options for backpacking trips. Some dry bags, like the Sea to Summit E-vent compression bag, can also help compress your sleeping bag to save space in your pack. If you plan to encounter high-risk water crossings, a dry bag may be the best option to ensure your sleeping bag stays dry.
While these methods can help keep your sleeping bag dry, it's important to note that no sleeping bag is completely waterproof. Waterproofing sprays and coatings, such as DWR (durable water repellent), can aid in water repellency but will not make your sleeping bag completely waterproof. Additionally, these treatments can reduce the breathability of your sleeping bag, leading to a buildup of moisture and sweat inside the bag. Therefore, it's essential to balance waterproofing with breathability to ensure a comfortable night's sleep.
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Pros of a stuff sack: keeps your bag compressed and protected from punctures
Sleeping bags can be quite bulky, and using a stuff sack is a great way to compress them into a much smaller package. This compression helps save space in your backpack, allowing you to pack other essential items. It also makes it easier to carry your sleeping bag, as a compressed bag is more manageable and can be attached to the outside of your pack if needed.
The compression offered by stuff sacks is especially beneficial if you have a larger, bulkier sleeping bag. Down sleeping bags, for example, can be highly compressible, and a stuff sack can reduce their packed size significantly. This compression is achieved through the use of compression straps or by squeezing out the air, resulting in a smaller, denser package.
In addition to compression, stuff sacks also provide protection for your sleeping bag. They act as a barrier between the bag and the rest of your gear, shielding it from potential punctures and tears. This protection is crucial, especially when carrying a lightweight or delicate sleeping bag. The stuff sack can prevent snags and rips, keeping your sleeping bag intact and functional.
Stuff sacks can also offer water resistance or waterproofing, adding another layer of protection against the elements. This feature is particularly useful if you anticipate encountering rain, snow, or water crossings during your trip. While not all stuff sacks are waterproof, many offer some level of water resistance, providing peace of mind in wet conditions.
Overall, a stuff sack is a valuable investment for any outdoor enthusiast. It helps keep your sleeping bag compressed and protected from punctures and other damage, ensuring a warm and comfortable night's rest during your adventures.
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Cons of a stuff sack: adds unnecessary weight and takes up more space
Using a stuff sack for your sleeping bag can sometimes do more harm than good. While it may seem like a good way to compress your sleeping bag, it can end up taking up more space in your bag. This is because the sleeping bag can no longer fill the voids created by less flexible items in your backpack.
Stuff sacks can also add unnecessary weight to your bag. This is especially important to consider if you are going on a long hike or backpacking trip, as a heavy bag can quickly tire you out. It is recommended that a loaded backpacking pack should not weigh more than 20% of your body weight, and a loaded day hiking pack should not weigh more than 10% of your body weight. If you are able to reduce the weight of your gear, you may be able to switch to a lighter-weight backpack.
Additionally, if you are using a stuff sack for your sleeping bag, you may need to bring additional bags for your other gear, which will also add weight. Instead, consider using a pack liner, which is one big waterproof sack that will keep all your gear dry without adding extra weight.
If you are set on using a stuff sack, there are a few ways to reduce the weight and space it takes up. Firstly, make sure you are only bringing the stuff sacks that you need. It is easy to get carried away with organizing your gear and using more stuff sacks than necessary. Secondly, consider making your own stuff sacks out of lightweight materials like sil nylon and tiny cord locks. This way, you can customize the size and shape of your stuff sack to fit your bag perfectly. Finally, if you are bringing multiple stuff sacks, try to fill the empty spaces between them with smaller items like socks.
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Waterproof stuff sacks: Sea to Summit offers two options with hydrostatic heads over 2000mm
Waterproofing your sleeping bag stuff sack is a good idea, especially if you are going to be in an environment with water or rain. While some stuff sacks are not waterproof, Sea to Summit offers two options with hydrostatic heads over 2000mm, which is more than adequate for the types of environments dry bags, stuff sacks, and compression sacks are intended for.
The first option is the Ultra-Sil Stuff Sack, which is an ultralight and durable solution made with water-resistant, bluesign® approved Ultra-Sil 30D Cordura® nylon fabric. This fabric has a hydrostatic head of 2000mm, double-stitched and reinforced stress points for added strength and durability, and a slippery fabric with a secure grab handle for easy packing. The stuff sack also features a tear-proof drawcord throat with two super-strong Hypalon pull-tabs and a reinforced pull handle on the base.
The second option is the Compression Dry Sack, which is a fully waterproof bag with taped seams and hypalon roll-top closures to keep your gear dry in wet conditions. This bag is perfect for maximizing space in your pack or travel bag, and it is ideal for sleeping bags, insulated clothing, and puffy jackets. The eVent fabric in the base allows excess air to be squeezed out, making it a great option for compression.
It is important to note that while the Ultra-Sil Stuff Sack is water-resistant, it is not completely waterproof as the seams are not tape-sealed and the top does not have a roll-top closure. Therefore, if you are looking for complete waterproofing, the Compression Dry Sack might be a better option.
Additionally, some people choose to use alternative methods to waterproof their sleeping bag stuff sacks, such as using heavy-duty trash bags, compactor bags, or even large black garbage bags to line their entire bag. These options may be more cost-effective, but they may not provide the same level of durability and water protection as the Sea to Summit stuff sacks.
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Alternatives: Rab bags with Neutrino Endurance shells are nearly waterproof
There are a variety of ways to keep your sleeping bag dry while camping or hiking. Some people choose to use a waterproof stuff sack, while others opt for a simple trash bag or compression sack to keep their sleeping bag dry. Some people also use a combination of these methods, depending on the weather conditions and the likelihood of encountering water. For example, if there is a risk of falling into a creek or river, a waterproof stuff sack might be warranted to keep the sleeping bag dry and prevent a potentially life-threatening situation.
If you're looking for an alternative to waterproof stuff sacks, Rab bags with Neutrino Endurance shells are a great option as they are nearly waterproof. The Pertex Endurance outer fabric, which is the same fabric used in Rab's down jackets, makes the bags durable and well-suited for damp conditions. The Neutrino Endurance 600, in particular, has been praised for its durability, comfort, and warmth. It has been designed specifically for women, with features such as a shorter length, narrower shoulders, and a wider hip area. It also has an angled footbox and an anti-snag zipper. The bag is hand-filled in Derbyshire, UK, and has been rigorously tested in tough environments and extreme cold weather.
While the Neutrino Endurance 600 is on the larger side and may not compress as small as other bags, it strikes a good balance between warmth and space. It has 800+ down fill and a Pertex Quantum lining that allows the down to loft and create a warm and cozy environment. The bag is suitable for alpine climbing, mountaineering, and regular camping, offering a good warmth-to-weight ratio.
In addition to the Neutrino Endurance 600, Rab offers a range of sleeping bags with different features and specifications. They have ultralight bags for hut-to-hut trekking and high-fill-power bags for arctic sleeping with a limit rating of -40°C. Their bags use synthetic insulation or down, depending on the intended use, and all bags are hand-filled with high-quality European down to ensure the best possible condition of the down insulation.
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Frequently asked questions
Yes, it is ok to waterproof your sleeping bag stuff sack. Waterproofing your stuff sack adds an extra layer of protection against wet conditions, ensuring your sleeping bag stays dry.
There are a few ways to waterproof your sleeping bag stuff sack. You can use a trash bag, a compression sack, or a dry sack. Some stuff sacks are made with waterproof fabrics, such as ripstop nylon with a polyurethane coating, and have roll-top closures to seal out moisture.
Yes, some people choose not to use a stuff sack as it can take up more space in their backpack by preventing the sleeping bag from filling the voids created by less flexible items. Instead, they may use a trash compactor bag or a pack liner to keep their sleeping bag dry.









































