Gina Johnson
Compression sacks are space-saving bags that can be used to compress bulky items such as sleeping bags, down jackets, and pillows. They are handy when space is limited, as they can reduce items to almost a third of their size. They are available in a range of sizes, from 3 litres for small items to 35 litres for a sleeping bag. It is important to note that sleeping bags should not be stored in compression sacks for extended periods. When choosing a compression sack, it is important to consider the uncompressed size of the sleeping bag and the level of compression required. Compression sacks can also provide protection and durability to the items stored inside.
| Characteristics | Values |
|---|---|
| Purpose | Compression sacks are used to compress bulky items like sleeping bags, jackets, and pillows to a much smaller size, making them easier to carry. |
| Benefits | Space-saving, protection from damage and water, cost-effective, and useful for various adventures like backpacking, kayaking, and motorcycle tours. |
| Usage | Place items inside, ideally filling the bag to the top or at least half-full. Fold or roll clothes to minimise wrinkling. Do not store items for extended periods to avoid damage. |
| Size | Available in a range of sizes, from 3L to 35L. The right size depends on the uncompressed size of the sleeping bag and the desired level of compression. |
| Material | Chosen to complement the sleeping bag's fabric and insulation type, enhancing protection and durability. Some sacks are fully welded and waterproof. |
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What You'll Learn
Choosing the right size
Secondly, you need to determine the level of compression you need. Compression sacks can reduce bulky items to almost a third of their size, so consider how small you want your sleeping bag to be. If you are backpacking, you will want to compress your sleeping bag as small as possible to make more room in your backpack. If you are car camping, a regular stuff sack will do as you do not need to compress your bag to be very small.
The capacity of compression sacks is usually measured in liters and cubic inches, with sizes ranging from 3-liter bags for small items to 35-liter bags for sleeping bags. It is recommended to get the smallest size possible that fits your bag. You can determine the volume of your items by filling a box and measuring. The compression feature may not work if the sack is nearly empty, so it should be at least half full.
Additionally, consider the closure of the sack. If the sack has a roll-top closure, you can press down on it with your body weight as you fold and roll. Finally, while compression sacks are great on the trails, avoid storing your sleeping bag in them for too long as they can cause damage if the item is left compressed for an extended period.
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Bundled vs separate purchases
Compression sacks are a great way to condense the contents of your luggage or backpack into a smaller, denser bundle. They are especially useful for bulky items like sleeping bags, jackets, and pillows, and can compress their volume by one-half to one-third.
When it comes to bundled vs separate purchases, there are a few things to consider. Firstly, sleeping bags and compression sacks are often sold together as a bundle, and this option usually offers better value than purchasing them separately. The sack included in the bundle is optimized for the specific sleeping bag, ensuring maximum compression without damage and the material and design of the sack complement the sleeping bag's fabric and insulation type.
On the other hand, if you already own a sleeping bag and are looking to purchase a compression sack separately, you need to consider the uncompressed size of your sleeping bag and the level of compression you require. Sleeping bags vary in packed volume depending on factors such as fill (down or synthetic) and fabric, so you need to choose a compression sack size that accommodates this. Manufacturers typically measure the capacity of compression sacks in liters, with sizes ranging from 3 liters for small personal items to 35 liters for a sleeping bag.
Additionally, it's worth considering how you intend to use the compression sack. While a single large compression sack may work for some, others may prefer to separate their belongings into multiple smaller sacks for easier organization and access. Waterproof or water-resistant sacks are also recommended, especially if your backpack or panniers are not waterproof.
Ultimately, the decision to purchase a bundled sleeping bag and compression sack or to buy the sack separately depends on your specific needs and preferences. If you're looking for the best value and convenience, a bundled option may be ideal. However, if you already own a sleeping bag or have specific requirements for your compression sack, purchasing them separately allows for more customization.
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Material compatibility
The material and design of a compression sack are chosen to complement the sleeping bag's fabric and insulation type. For instance, synthetic bags tend to be bulkier and may need larger compression sacks, whereas down bags are easier to compress and can fit into smaller sacks. Mummy sleeping bags, for example, are designed to maximize warmth and minimize weight.
Waterproof compression sacks are usually made from materials like nylon with a polyurethane coating and feature sealed seams and a roll-top closure to prevent water ingress. They add a layer of protection for your sleeping bag, ensuring that it stays dry even in wet conditions.
When choosing a waterproof compression sack, it is important to consider the material durability and the closure system. The material should be durable enough to withstand outdoor use and the closure system, such as a roll-top with buckles, should provide an extra barrier against moisture.
The size of the compression sack is also important. It should be slightly larger than the compressed dimensions of the sleeping bag to accommodate the bag without straining the sack's materials. The liter capacity of a sleeping bag compression sack can vary, generally ranging from 10 to 30 liters, depending on the size and insulation type of the sleeping bag.
Additionally, the packing technique can affect the space efficiency of the compression sack. Instead of rolling, it is recommended to stuff the sleeping bag into the sack in handfuls or fold it evenly and tightly to minimize air pockets.
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Waterproof options
When choosing a compression sack for your sleeping bag, you should consider the size of the bag when uncompressed, as well as the level of compression you require. Compression sacks can reduce the size of your sleeping bag by up to two-thirds, making them ideal for backpacking, kayaking, and motorcycle touring.
Waterproof compression sacks are a great option for keeping your gear dry in wet conditions. Sea to Summit offers a range of lightweight, water-resistant, and waterproof compression sacks for various outdoor activities. Their "Ultra-Sil" compression sacks come in a variety of sizes, with the 10L bag being suitable for protecting a sleeping bag from getting wet. Zenbivy also offers fully welded, waterproof compression dry sacks with taped seams that are guaranteed to remain watertight throughout their lifetime. These dry sacks are designed to be both lightweight and durable, with a combination of 30D ripstop polyester and a 75D polyester base.
It is important to note that while compression sacks are great for hauling gear and saving space, you should not store your sleeping bag in them for an extended period. Additionally, when choosing a compression sack, consider the material and design of the sack to ensure it complements the fabric and insulation type of your sleeping bag, enhancing protection and durability.
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Compression time limits
Compression sacks are a handy way to save space when packing for outdoor adventures. They are designed to compress bulky items like sleeping bags and down jackets to almost a third of their size. However, it is important to be mindful of the time your sleeping bag spends in a compression sack as over-compression can lead to loft degradation.
The time limit for keeping a sleeping bag in a compression sack depends on various factors, including the bag's material, the tightness of compression, and the frequency of use. Down bags, for example, are more susceptible to damage from over-compression than synthetic bags. This is because the stiffer feather components can be damaged, whereas the down content can nestle together without crunching or folding.
It is generally recommended to avoid storing sleeping bags in compression sacks for extended periods. One source suggests that keeping a down bag compressed for a long period may not cause harm, but keeping a damp down bag compressed will. This is because a damp bag may not be able to dry out thoroughly while compressed, leading to potential damage.
Another factor to consider is the tightness of compression. The tighter the bag is compressed, the greater the potential strain on the material. This can impact the bag's longevity and performance, as highly compressed bags may take longer to loft, resulting in reduced warmth during use.
To maximise the lifespan of your sleeping bag, it is advisable to compress it only as much as necessary and for as long as needed. When not in use, store your sleeping bag loosely to allow it to dry out completely and maintain its loft. Regularly fluffing and cleaning your sleeping bag can also help maintain its condition.
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Frequently asked questions
Compression sacks are space-saving bags that compress bulky items like sleeping bags to a fraction of their size, making them ideal for backpacking and other outdoor adventures.
Choosing the right compression sack involves understanding the uncompressed size of your sleeping bag and the level of compression you need. The sack's material and design should complement the sleeping bag's fabric and insulation type.
Place your sleeping bag inside the compression sack, ensuring it is at least half-full. If it has a rolltop closure, press down with your body weight as you fold and roll.
Some compression sacks, like the Zenbivy Dry Sacks, are fully welded and designed with waterproof breathable panels to keep your sleeping bag dry.
