Big Agnes Tech Compression Sack

The Tech Compression Sack is designed to compress your gear, such as sleeping bags or insulation layers, down to one-third of its original volume. This makes it significantly easier to fit bulky items into a smaller pack.

It is constructed from water-resistant nylon with silicone and polyurethane coatings, which will protect your gear from light rain or damp conditions. However, it is not fully submersible or waterproof, so it should not be treated as a dry bag for river crossings.

The 10L is best for lightweight summer bags or down jackets, the 14L typically fits standard three-season sleeping bags, and the 21L is designed for larger winter bags or bulkier synthetic insulation. We recommend checking the packed size of your specific sleeping bag to ensure the best fit.

Not at all. The sack features a smooth exterior that helps it slide easily into tight spaces, and the top and bottom lids ensure the compression remains even, creating a more uniform shape that is easier to pack than lumpy, uneven bundles.

Big Agnes stands behind this product with a lifetime workmanship guarantee. If you experience a failure due to a defect in materials or construction, they will repair or replace the item.