Sleeping Bag Temperature Guide

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.

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.

Specialist Boxfoot Series (Superseded by Spindrift XT Series)

Designed for alpine & extreme cold conditions.

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.

Tapered Rectangular XT Series (superseded by Brindabella XT Series)

Versatile down sleeping bags for bushwalking & alpine camping.

Helium Lightweight Series

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

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

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.

Zero Ultralight Series

Incredibly lightweight & ultra compact down sleeping bags.

Appropriate for users up to 188cm tall.

Zodiac Series

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

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

ProLite Series

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

Available in Standard & Extra Large sizes.

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.

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.