Miya Pearson
Compression sacks are a useful tool to reduce the volume of soft items, especially sleeping bags, and create valuable space in your backpack. When choosing a compression sack for your sleeping bag, it's important to consider the uncompressed size of your sleeping bag, the level of compression needed, and the type of insulation. Down sleeping bags, for instance, compress more than synthetic ones. Other factors to consider include the durability and
| Characteristics | Values |
|---|---|
| Purpose | To reduce the volume of soft items like clothes and sleeping bags, freeing up valuable space in your backpack |
| Backpacking vs. car camping | Backpacking requires compression sacks to compress the sleeping bag as small as possible. Car camping does not require compression sacks. |
| Type of insulation | Down sleeping bags compress more than synthetic ones, so you might need a smaller sack for down. |
| Size | Small (6L to 10L) for ultralight down summer bags. Medium (10L to 20L) for most 3-season down sleeping bags. Large (20L to 30L) for synthetic bags or winter-grade down sleeping bags. |
| Waterproof | Waterproof compression sacks add a layer of protection, ensuring the sleeping bag stays dry. They are usually made from materials like nylon with a polyurethane coating and have sealed seams and roll-top closures. |
| Material durability | The material should be durable enough to withstand outdoor use while being waterproof. |
| Closure system | Look for reliable closure systems like roll-tops with buckles, which offer an extra barrier against moisture. |
| Manufacturer's specifications | Check the manufacturer's website or product specifications for the uncompressed volume of the sleeping bag. |
| Calculating volume | Measure the radius and height of the compressed sleeping bag and use a formula to calculate the volume in liters. |
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What You'll Learn
Understand the uncompressed size of your sleeping bag
Understanding the uncompressed size of your sleeping bag is crucial when choosing a compression sack. Sleeping bags vary in their packed volume, depending on the type of insulation and the shell and liner fabrics used. Therefore, it is essential to determine your sleeping bag's volume to choose a suitably sized compression sack.
Firstly, check if the manufacturer has listed the compressed and uncompressed volume of your sleeping bag. This information may be available on the product page of the manufacturer's website or in the product specifications on other websites. If the uncompressed volume is listed, you can use this as a guide to choosing the right compression sack size.
If the uncompressed volume is not listed, you can calculate it yourself. One method is to press the sleeping bag down firmly into a box until the upper surface is roughly level (the bag is now mildly compressed). Then, measure the average depth of the bag in inches and multiply the length, width, and depth to obtain the volume in cubic inches.
Another suggested method to determine the volume of your sleeping bag is to fill it with items and measure the volume of the filled box. This method may be useful if you are calculating the total volume of items you plan to put in your compression sack, including your sleeping bag.
Once you have determined the uncompressed volume of your sleeping bag, you can refer to the size guides provided by compression sack manufacturers. Some manufacturers recommend choosing a compression sack that is slightly larger than the compressed volume of your sleeping bag. For example, one manufacturer suggests taking the compressed volume and adding 5 litres to determine the required compression sack size.
It is worth noting that compression sacks can significantly reduce the volume of your sleeping bag. If you are backpacking, you may want to compress your sleeping bag as much as possible to save space in your backpack. However, if you are car camping, compressing your sleeping bag may not be necessary, and a regular stuff sack may suffice.
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Know the level of compression you need
When choosing a compression sack for your sleeping bag, it is important to consider the level of compression you require. Compression sacks are designed to reduce the volume of your sleeping bag, freeing up valuable space in your backpack.
Firstly, determine the uncompressed volume of your sleeping bag. Manufacturers often list the compressed and uncompressed volume of sleeping bags, which can be used as a guide. If this information is not available, you can measure the uncompressed volume by pressing the sleeping bag down firmly in a box until the upper surface is level. Then, measure the average depth and multiply the length, width, and depth to calculate the volume in cubic inches.
Next, consider the type of insulation your sleeping bag has. Down sleeping bags compress more than synthetic ones, requiring a smaller sack. The level of compression also depends on the bag's temperature rating. Ultralight down summer bags typically require small-sized compression sacks (6L to 10L), while medium-sized sacks (10L to 20L) are suitable for most 3-season down sleeping bags. Large compression sacks (20L to 30L) are recommended for synthetic bags or winter-grade down sleeping bags.
Additionally, if you require a compression sack for backpacking, aim for the smallest size possible to maximize space in your backpack. However, if you are car camping, a regular stuff sack without significant compression will suffice.
Lastly, consider the closure system and material durability of the compression sack. A reliable closure system, such as a roll-top with buckles, provides an extra barrier against moisture. Choose a durable material that can withstand outdoor conditions while also being waterproof to protect your sleeping bag from wet weather.
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Choose between a compression sack and a stuff sack
Compression sacks are designed to reduce the volume of your sleeping bag, creating more space in your backpack. They also offer additional protection from moisture, dirt, and wear.
To choose the right size, you need to understand the uncompressed size of your sleeping bag and the level of compression you need. Down sleeping bags, for example, compress more than synthetic ones, so you might need a smaller sack.
If you're backpacking, a compression sack is ideal as it allows you to compress your sleeping bag to a minimum, freeing up space in your backpack.
However, if you're car camping, a stuff sack might be a better option. Stuff sacks are larger and not designed for compression, making them perfect for simply transporting your sleeping bag from your car to your campsite. They are also great for storing your sleeping bag at home.
Additionally, consider the features you need. Compression sacks offer various benefits, such as waterproof protection and durability. If you're looking for lightweight options, water-resistant compression sacks are available, while still offering adequate protection.
Ultimately, the choice between a compression sack and a stuff sack depends on your specific needs and preferences. If space optimization and protection are crucial, a compression sack is ideal. If you require a simple solution for transporting or storing your sleeping bag, a stuff sack might be more suitable.
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Consider the material and durability of the sack
When choosing a compression sack for your sleeping bag, it is essential to consider the material and durability of the sack. This is because the right material and durability will ensure that your sleeping bag stays protected and compressed during your adventures.
Firstly, consider the material of the compression sack. Different materials offer varying levels of protection and durability. For example, waterproof materials like nylon with a polyurethane coating can protect your sleeping bag from moisture, dirt, and wear. These materials are ideal if you anticipate encountering wet conditions during your travels.
Additionally, the durability of the compression sack is crucial. Opt for a sack made from durable material that can withstand the rigors of outdoor use. This is especially important if you plan to use the sack frequently or in challenging environments. A durable sack will protect your sleeping bag from tears, punctures, or other types of damage.
Furthermore, consider the closure system of the compression sack. A reliable closure system, such as a roll-top with buckles, provides an extra barrier against moisture and keeps your sleeping bag securely contained. This feature ensures that your sleeping bag remains dry and compressed during your journey.
Lastly, it is worth noting that the material and construction of your sleeping bag itself will also play a role in determining the appropriate compression sack. Different types of insulation, shell fabrics, and liner fabrics can affect the packed volume of your sleeping bag. Therefore, understanding the uncompressed size and compression needs of your sleeping bag will help guide your choice of compression sack material and durability.
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Look for a reliable closure system
When choosing a compression sack for your sleeping bag, it is important to look for a reliable closure system. This is a key consideration, as it will ensure that your sleeping bag stays securely inside the sack and doesn't come loose during your travels. A good closure system will also provide an extra barrier against moisture, keeping your sleeping bag dry and protected.
There are several types of closure systems available for compression sacks. One common and effective type is the roll-top closure, which involves rolling the top of the sack down several times and then securing it with buckles or straps. This type of closure creates a tight seal that helps to keep water and moisture out. It is also easy to operate and adjust, making it a convenient option for many users.
Another option for a closure system is a lid or flap closure. This type of closure typically involves a lid or flap that covers the opening of the sack and is secured with buckles, straps, or drawstrings. Lid closures can provide good protection from the elements and easy access to the contents of the sack. However, it is important to ensure that the lid or flap is properly secured to prevent accidental openings.
When considering a compression sack with a closure system, it is also worth looking at the materials used. Durable materials such as nylon or canvas can provide added protection for your sleeping bag and ensure the longevity of the sack itself. Waterproof materials or coatings can also be beneficial, especially if you anticipate encountering wet or humid conditions during your travels.
Additionally, some compression sacks offer extra features that enhance the closure system. For example, some sacks may have a waterproof zipper or a storm flap that provides additional protection from moisture and the elements. Others may have compression straps or external buckles that help to secure the contents and provide extra compression on the sleeping bag.
By considering the type of closure system, the materials used, and any additional features, you can choose a compression sack with a reliable closure system that meets your specific needs and requirements. This will ensure that your sleeping bag stays secure, dry, and protected during your adventures.
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Frequently asked questions
Compression sacks are useful tools to help reduce the volume of your sleeping bag, freeing up valuable space in your backpack. They also offer additional protection from moisture, dirt, and wear.
The size of the compression sack you need depends on the volume of your sleeping bag. Manufacturers often list the compressed and uncompressed volume of sleeping bags, which you can use as a guide. If this information is not available, you can measure the volume of your sleeping bag and add 5 litres to determine the required size of the compression sack.
Compression sacks come in various sizes, ranging from small (6L to 10L) to large (20L to 30L). They can also be made of different materials, such as waterproof nylon with a polyurethane coating, to suit different environments and conditions.
You can find compression sacks online or at outdoor gear stores. Some sleeping bags may come with a compression sack included, but you can also purchase them separately from brands like Sea to Summit and NEMO Equipment.
Yes, if you are not concerned about space optimisation, you can use a regular stuff sack or a large canvas, cotton, or nylon bag to store and transport your sleeping bag. Additionally, some hikers prefer to stuff their sleeping bags around more rigid items in their pack to utilise the space efficiently.
