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Guide

Camping down sleeping bags

For camping, match the sleeping bag to the night temperature and mat.

Key points

  • The mat insulates underneath; the sleeping bag alone is not enough.
  • Comfort and lower-limit ratings guide different assumptions about the sleeper.
  • Transport down dry and dry it thoroughly before storage.

How do you like to sleep?

UseChooseBear in mind
Car to campsiteChooseRoomier cutBear in mindSpace matters more than packed size.
BackpackingChooseLighter mummy shapeBear in mindStill choose warmth first.
Cooler travel seasonChooseSuitably warmer variantBear in mindNight temperatures matter, not daytime warmth.
Restless sleepingChooseMore shoulder and leg roomBear in mindMatch width to your sleeping position.

Compact or spacious?

  • Mummy shape (Touring luggage)

    Sea to Summit Spark

    A closer cut limits unnecessary internal volume.

    • Advantage: More compact in a backpack
    • Drawback: Less room to move
  • Roomier shape (Tent comfort)

    Sea to Summit Basecamp

    More space when packed size and weight matter less.

    • Advantage: Easier to change sleeping position
    • Drawback: Bulkier in luggage

What to look for

QuestionIn briefWhy
How cold overnight?In briefComfort range with a marginWhyThe lowest printed figure is not a comfort recommendation. Allow for your cold sensitivity and suitable sleeping clothes.
How long and wide?In briefBody height and sleep positionWhyAvoid compressing fill at feet and shoulders. An unnecessarily oversized bag is not an advantage either.
How damp is the site?In briefPlan a dry sleeping placeWhyTreatments do not replace a weatherproof tent and dry transport. Down loses insulating performance when thoroughly wet.

Common questions

Is a warm bag enough without a suitable mat?

No. The ground can draw away substantial warmth. Match mat insulation to ground conditions and season rather than simply choosing a warmer bag.

Why do model name and comfort rating differ?

A model name may refer to another temperature figure. Read the full ratings for the exact version and length.

How should I pack it in the morning?

Air and dry it first where possible. If it must travel damp, spread it out again at the next opportunity.

How do I store it after the trip?

Completely dry, loose and according to the manufacturer’s instructions. Prolonged heavy compression is unsuitable for long-term storage.

Last updated: November 2026