what size compression sack for sleeping bag

3 min read 07-02-2025

what size compression sack for sleeping bag

Meta Description: Finding the right compression sack for your sleeping bag is crucial for efficient packing. This guide helps you determine the ideal size, considering bag type, compression level, and personal preferences. Learn how to measure your sleeping bag and choose the perfect fit for backpacking, camping, or travel! We'll cover everything from ultralight options to larger, less-compressing sacks.

Understanding Compression Sack Sizes

Choosing the right compression sack for your sleeping bag is key to efficient packing, especially for backpacking or travel. But with so many sizes available, how do you choose? This guide breaks down everything you need to know to find the perfect fit.

Factors Affecting Compression Sack Size

Several factors influence the ideal compression sack size:

Sleeping Bag Size and Type: A larger, bulkier sleeping bag (like a down bag) will require a larger sack than a smaller, synthetic bag. Down bags, in particular, need careful consideration to avoid damaging the down clusters. Mummy bags generally compress better than rectangular bags.
Desired Compression Level: Some prefer maximum compression to save space, while others prioritize preserving the loft of their sleeping bag (especially crucial for down bags) and opt for less aggressive compression.
Personal Preference: Some backpackers prioritize weight above all else. Others prioritize ease of packing and unpacking over a few extra cubic inches.

Measuring Your Sleeping Bag

Before purchasing a compression sack, measure your sleeping bag's dimensions. Use a tape measure to find its:

Length: Measure from the top of the bag to the foot box.
Width (at widest point): Find the widest part of the bag and measure across.

Use these measurements as a rough guideline when selecting a sack. Remember that the stated size of a compression sack usually refers to its uncompressed volume.

Compression Sack Size Recommendations

Here's a general guideline based on common sleeping bag sizes:

For sleeping bags under 30 cubic feet (uncompressed):

Short (under 55" sleeping bag): A 6-10 liter compression sack is usually sufficient, even for down bags. Many backpacking-focused brands sell these specialized bags.
Regular (55-65" sleeping bag): A 10-15 liter compression sack is a good starting point. Consider a larger size if you prioritize loft preservation.
Long (over 65" sleeping bag): A 15-20 liter compression sack or larger will likely be necessary.

For sleeping bags over 30 cubic feet (uncompressed):

You'll almost certainly need a sack larger than 20 liters. Consider a stuff sack instead of a compression sack to minimize compression and damage to fill.

Important Note: These are just guidelines. Always check the manufacturer's specifications for both your sleeping bag and the compression sack.

Compression vs. Stuff Sacks

The difference between a compression sack and a stuff sack is significant:

Compression Sacks: Designed to reduce the volume of your sleeping bag significantly. They use straps or buckles to achieve high compression.
Stuff Sacks: Simpler bags designed to hold your sleeping bag. They offer less compression but are often lighter, cheaper, and less likely to damage your sleeping bag, particularly down bags.

For lightweight backpacking, compression sacks are usually preferred. However, for less weight-sensitive trips or if you have a down bag, a stuff sack might be a better choice. For very cold-weather trips, you might want to use a larger stuff sack with no compression to help maintain the loft of your sleeping bag.

Choosing the Right Compression Sack: Key Considerations

Material: Durable materials like ripstop nylon are ideal. Look for reinforced stitching, especially at stress points.
Compression Method: Some sacks use straps, while others rely on a roll-top closure. Consider your packing style and preferences.
Weight: Ultralight options are available for backpackers prioritizing minimal weight. However, these often come with a higher price tag.
Price: Compression sacks range in price, reflecting differences in material quality, features, and compression level. Don't sacrifice quality, as a poorly made sack may damage your sleeping bag.

Conclusion

Selecting the appropriate compression sack for your sleeping bag involves considering various factors including your bag's size, your packing preferences, and the level of compression you're willing to accept. By measuring your sleeping bag, and taking into account the recommendations above, you'll be well-equipped to choose a compression sack that optimizes your packing efficiency without compromising your sleeping bag's performance or longevity. Remember to prioritize a high-quality sack to protect your investment!