International
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Sleeping Bag Temperature Guide

Important considerations

The stated range is an indication of the potential comfort range and minimum temperature that may be possible. This should be used only as a guide. Ratings can vary dramatically depending on whether you are a warm or cold sleeper.

Other factors that will determine your comfort in a sleeping bag are the type of sleeping mat used, whether you're wearing thermals, socks or headwear, your health, metabolism, age and fatigue, hydration levels and what you've eaten. Hydronaute XT shell will increase the warmth of a sleeping bag.

 

Expedition 8000 Series

Designed purely for attempts on the World's great peaks.

Made with a larger 'expedition fit' to allow the wearing of down clothing as required, available in Small/Medium (S/M) & Medium/Large (M/L) sizes.

Model Name Weight* Season Use Women
or Cold Sleepers
Men
or Warm Sleepers
Expedition 8000 2100g TBC (M/L) 4 Season Expedition -30ºC / -22ºF -40ºC / -40ºF

 

Spindrift XT Series

Uncompromising sleeping bags designed for alpine & extreme cold conditions: Backcountry camping, polar expeditions & high altitude mountaineering.

Available in Standard, Women's & Extra-Large Sizes. Spindrift 700 available in Standard & XL only.

Model Name Weight* Season Use Women
or Cold Sleepers
Men
or Warm Sleepers
Spindrift XT 700 1265g 4 Season Alpine -7ºC / 19ºF -13ºC / 9ºF
Spindrift XT 850 1430g 4 Season Alpine -13ºC / 9ºF -19ºC / -2ºF
Spindrift XT 1000 1630g 4 Season Alpine & Expedition -19ºC / -2ºF -25ºC / -13ºF

 

Specialist Boxfoot Series (Superseded by Spindrift XT Series)

Designed for alpine & extreme cold conditions.

Model Name Weight* Season Use Women
or Cold Sleepers
Men
or Warm Sleepers
Highland 1060g 4 Season Bushwalking & Alpine -4ºC / 25ºF -10ºC / 14ºF
Spindrift/Zeal 1200g/1200g 4 Season Alpine -9ºC / 16ºF -15ºC / 5ºF
Telemark 1300g 4 Season Alpine -13ºC / 9ºF -19ºC / -2ºF
Main Range/Nemo 1450g/1450g 4 Season Alpine -18ºC / 0ºF -24ºC / -11ºF

 

Brindabella XT Series

Versatile sleeping bags for cool to cold adventures both above & below the snow-line.

Available in Standard, Women's & Extra-Large Sizes.

Model Name Weight* Season Use Women
or Cold Sleepers
Men
or Warm Sleepers
Brindabella XT 700 1330g 4 Season Bushwalking & Alpine -6ºC / 21ºF -12ºC / 10ºF
Brindabella XT 850 1485g TBC 4 Season Bushwalking & Alpine -10ºC / 14ºF -16ºC / 3ºF

 

Tapered Rectangular XT Series (superseded by Brindabella XT Series)

Versatile down sleeping bags for bushwalking & alpine camping.

Model Name Weight* Season Use Women
or Cold Sleepers
Men
or Warm Sleepers
Nadgee 1000g 3 Season Bushwalking 0ºC / 32ºF -6ºC / 21ºF
Brindabella/Ossa 1160g/1100g 4 Season Bushwalking -4ºC / 25ºF -11ºC / 12ºF
Kiandra 1300g 4 Season Alpine -9ºC / 16ºF -15ºC / 5ºF

 

Helium Lightweight Series

Lightweight down sleeping bags for hiking, ski touring & bike packing.

Available in Standard, Women's & Extra-Large Sizes.

Model Name Weight* Season Use Women
or Cold Sleepers
Men
or Warm Sleepers
Helium 300 650g 3 Season Bushwalking 4ºC / 39ºF -1ºC / 30ºF
Helium 450 800g 3 Season Bushwalking -1ºC / 30ºF -7ºC / 19ºF
Helium 600 950g 4 Season Bushwalking & Alpine -4ºC / 25ºF -10ºC / 14ºF

 

Warmlite XT-R Series

Bunker down and stay warm in conditions well below what you would expect for sleeping bags of this price. Made with a 100% recycled Hydronaute XT-R Shell and a 100% recycled silk-touch Nylon lining.

Available in Standard, Women's & Extra-Large Sizes.

Model Name Weight* Season Use Women
or Cold Sleepers
Men
or Warm Sleepers
Warmlite XT-R 550 1060g 3 Season Bushwalking -1ºC / 30ºF -7ºC / 19ºF
Warmlite XT-R 750 1270g 3 Season Bushwalking -7ºC / 19ºF -12ºC / 10ºF
Warmlite XT-R Boxfoot 750 1240g 4 Season Alpine -9ºC / 16ºF -14ºC / 7ºF

 

Zero Ultralight Series

Incredibly lightweight & ultra compact down sleeping bags.

Appropriate for users up to 188cm tall.

Model Name Weight* Season Use Women
or Cold Sleepers
Men
or Warm Sleepers
Zero UltraLight 300g 2 Season Bushwalking 13ºC / 55ºF 7ºC / 45ºF
Zero SuperLight 427g 2-3 Season Bushwalking 8ºC / 46ºF 2ºC / 36ºF

 

Zodiac Series

Quality down sleeping bags designed for comfortable camping & bang for buck.

Available in Standard, Women's, Extra-Large & Extra-Extra-Large Sizes.

Model Name Weight* Season Use Women
or Cold Sleepers
Men
or Warm Sleepers
Zodiac 350 940g 2 Season Travel & Bushwalking 6ºC / 43ºF 1ºC / 34ºF
Zodiac 500 1060g 3 Season Travel & Bushwalking 2ºC / 36ºF -4ºC / 25ºF
Zodiac 700 1300g 4 Season Bushwalking -3ºC / 27ºF -10ºC / 14ºF

 

ProLite Series

The ProLite Series slash weight by using high loft down, ultralight fabric & downless base.

Available in Standard & Extra Large sizes.

Model Name Weight* Season Use Women
or Cold Sleepers
Men
or Warm Sleepers
Prolite 150 430g 2 Season Bushwalking 12ºC / 54ºF 6ºC / 43ºF
Prolite 250 540g 2-3 Season Bushwalking 8ºC / 46ºF 2ºC / 36ºF

 

Evo Synthetic Series

The Evolution Series are a high performance synthetic alternative to down sleeping bags. By using Shingle Baffle Construction, Mont’s Evolution provide greater warmth, less weight & smaller packed size than quilted synthetic sleeping bags.

Available in Standard & Extra Large sizes.

Model Name Weight* Season Use Women
or Cold Sleepers
Men
or Warm Sleepers
Evo UltraLight 785g 2 Season Travel & Bushwalking 12ºC / 54ºF 8ºC / 46ºF
Evo Light 1320g 3 Season Travel & Bushwalking 4ºC / 39ºF -2ºC / 28ºF
Evo Super 1610g 3 Season Travel & Bushwalking 0ºC / 32ºF -6ºC / 21ºF

 

Important considerations

The stated range is an indication of the potential comfort range and minimum temperature that may be possible. This should be used only as a guide. Ratings can vary dramatically depending on whether you are a warm or cold sleeper.

Other factors that will determine your comfort in a sleeping bag are the type of sleeping mat used, whether you're wearing thermals, socks or headwear, your health, metabolism, age and fatigue, hydration levels and what you've eaten. Hydronaute XT shell will increase the warmth of a sleeping bag.

Mont Temperature Rating System

The Mont Temperature Rating System is based on over 35 years of experience in the design, manufacture and use of sleeping bags in the wild. On a Mont Temperature Rated sleeping bag two temperatures are given, a warmer Women’s rating and a colder Men’s rating.

Women or Cold Sleeper Rating

The Women’s rating suggests that an average woman or cold sleeper will be comfortable at or around that temperature.

Men or Warm Sleeper Rating

The Men’s rating suggests that an average man or warm sleeper will be comfortable at or around that temperature.

These temperature ratings assume you're using an appropriately insulated sleeping mat, you are well hydrated, well fed and dry.

We always suggest buying a sleeping bag with a temperature rating that will cover you a few degrees below the temperature you expect to face. It is much easier to cool down than it is to warm up.

* Weight refers to Standard size unless otherwise stated.

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