One Planet Sac -1 (1000 Grams)

Rated 5.0 out of 5
Based on 1 review
Regular price Our Price $249.99



The Sac features the latest in sleeping bag technology: the strong, warm, thermally-bonded Thermolink fill; lightweight, breathable 20-denier Vapour Vent fabric; a comfortable, efficient, tapered rectangular shape and all the technical features you expect from a One Planet bag. The Sac is designed for general use – all you need to do is select the warmth required.


Fill: Thermolink Synthetic
Comfort Rating: 4°C
Limit of Comfort: -1°C
Extreme: -16°C
Weight: Regular 1000G, Large 1110G
User Height: Regular 187cm, Large 195cm
Shoulder circumference: Regular 160cm, Large 175cm
Stuffsac size (Uncompressed): All sizes 7L (18 x 28cm)

Temp Ratings

One Planet sleeping bags are rated using the international standard for sleeping bag performance, ISO 23537-1. (This is a revised version of European Standard EN 13537.) This means every sleeping bag has two ‘real world’ and one extreme rating. To determine what temperature might be most suitable for you see our technical pages.

  • ‘Comfort’ rating is based on a ‘standard’ woman having a comfortable night’s sleep.
  • ‘Limit of comfort’ is based on the lowest temperature at which a ‘standard’ man is deemed to be able to have a comfortable night’s sleep. This is the figure we use in our product descriptions.
  • ‘Extreme’ rating is a survival rating for a ‘standard’ woman. According to ISO 23537-1, ‘a strong sensation of cold has to be expected and there is a risk of health damage due to hypothermia’. This is a survival rating only, and consumers should not rely on this rating for general use. The best guidelines are the comfort and limit of comfort ratings.





This bonded fibre weighs less and packs down smaller than competing synthetic fills, making our bags lighter and more compact while maintaining comfort and durability. The secret is in the manufacturing process: thousands of hollow fibres are sandwiched between a high-density thermal barrier and a fine, soft, body-conforming radiant retention layer to form one continuous sheet of Thermolink fibre. As it is one continuous layer, there aren’t any gaps for heat to escape, leading to better performance than traditional baffled fills.


    average rating 5.0 out of 5
    Based on 1 review
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    100% of reviewers would recommend this product to a friend
    1 Review
    Reviewed by Mick
    I recommend this product
    Age Range
    55 - 64
    Do you recommend this product?
    Rated 5 out of 5
    Review posted

    Great value synthetic bag

    Nice and small. Not as small and light as a down sleeping bag, but for the price this works well.

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