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Guide

Stuff sacks

A sack can organise kit, reduce volume or protect it from water. Decide which job you need first; a simple fabric bag serves a different purpose from a properly closed dry bag.

Key points

  • Compression sacks save space in transit.
  • Store sleeping bags loose and dry at home.
  • Close roll tops as instructed and avoid overfilling.
  • Use a waterproof sack only within its approved limits.

What should your sack do?

UseChooseBear in mind
Pack a sleeping bag smallerChooseA compression sackBear in mindStraps reduce transport volume. Choose a size that accepts the dry bag without overloading seams.
Keep pack contents dryChooseA suitable dry bagBear in mindCoated fabric and a suitable closure protect sensitive contents. Follow instructions and immersion limits.
Organise small itemsChooseA light fabric bagBear in mindA bag separates equipment and clothing. For dry storage at home, airflow is often more useful than sealing.
Store a sleeping bagChooseA large airy storage sackBear in mindThe filling can lie loosely. Pack only when hidden damp areas have dried too.

What to look for

QuestionIn briefWhy
Which size?In briefStart with the packed contentsWhyA small sack strains seams and closure. An oversized one can be harder to arrange inside a pack and seal properly.
Which closure?In briefMatch the job and instructionsWhyA drawcord opens quickly; a roll top needs a free margin for closing. Allow that room when filling it.
How tough?In briefInside or outside the packWhyLight bags work well inside. Contact with rock, boat floors or rough luggage calls for more resistant outer fabric.
Compression or storage?In briefSeparate transit and home useWhySmall volume helps on a trip. Long-term tight packing leaves sleeping bag filling less room to expand.

Common questions

Is every stuff sack waterproof?

Check fabric, seams and closure on the specific model. A drawcord fabric bag mainly provides organisation. Water protection needs a construction approved for that purpose.

Can a dry bag go underwater?

Only within the maker's stated limits. A roll top may be intended for splashes without covering prolonged immersion. Delicate electronics need protection designed for their intended exposure.

How big should the sleeping bag sack be?

Compare your sleeping bag's packed volume with the sack's sizing guidance. Leave room to close it and tighten compression straps evenly rather than pulling only one side.

How should I store a sleeping bag at home?

Fully dry, loosely and according to the care instructions. A large storage sack or another airy arrangement gives the filling more room than its tight transport bag.

Last updated: November 2026