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Mountain Equipment Lunar II Sleeping Bag Denim

Mountain Equipment Lunar II Sleeping Bag Denim

£90.00 £100.00
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The Lunar range from M.E. are lightweight, packable, synthetically insulated sleeping bags. The Lunar II makes the ideal bag for three season travel and backpacking. 


Season : 2020W C

Code : 003881-01476-LZ

Weight : 0KG

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What is the Lunar II?

The Lunar II is a synthetically insulated sleeping bag from Mountain Equipment. It is lightweight, packable and has been specifically designed for three season use. It's the ideal bag for hut to hut adventures in the mountains, wild camping on hilltops in the summer and will still keep you warm and protected on those chilly autumn nights. 

What is the Lunar made of?

Insulation: The insulation in the Lunar is Polarloft which strikes the perfect balance between warmth, comfort and durability. If you were to look at Polarloft under a microscope, you'd see that all the fibres differ in size; the thicker provide durability and loft whilst the finer fibres provide much of the insulation and help trap warm air. The beauty of synthetic insulation is that if you were to get it wet it would still retain most (around 90%) of its insulating properties. 

Fabrics: The lunar is constructed using Lunar 40D - a 40 Denier Nylon that weighs in at only 43 g/m². It is soft to the touch, packable and durable. It is also breathable and allows sweat to escape through it on those warmer nights. 

What is the construction used in the Lunar?

The Lunar series uses single layer construction in the underside of the bag that not only offers surprising warmth and protection for its weight but also adds to its great packability. The Lunar II also uses Offest layer construction in the top of the bag for added warmth on those chilly nights - making it the ideal bag for all your three season backpacking adventures.

What are the features?

The Lunar features a full-length zip baffle, which helps seal out cold spots usually caused by zips and is supplied with a lightweight compression sack. 

How does the Lunar fit?

The Lunar fits into Mountain Equipments 'Alpine Fit' block which is tapered in the upper body and the legs to maximise thermal performance and minimise weight. The hood and foot-box are both anatomically shaped for comfort and thermal efficiency. 


The Lunar II is the ideal three season bag that offers the reliability and ease of synthetic insulation without compromising on weight and packability. 

  • Polarloft insulation
  • Lunar 40D Outer Fabric 
  • Offset layer construction top
  • Single Layer construction underside
  • Alpine Fit
  • Anatomically shaped hood and foot-box
  • Full-length zip baffle
  • Supplied with a lightweight compression sack
Care & Advice

How warm a sleeping bag do you really need? We’ve tried to help you by grouping our sleeping bags by their recognised comfort ratings. These are the ratings supplied by the brands that indicate the temperature at which you will remain comfortable whilst sleeping on a good insulated sleep mat. After all, comfortable is what you want to be when it’s cold and wet outside and you’re all tucked up in your nice warm sleeping bag.

We always recommend that you choose your bag according to the coldest conditions you will experience; you can always unzip a bag if it is too warm, but trying to sleep when you’re too cold is just miserable. Bear in mind that that we are all individuals and we all feel the cold differently, and that our own resistance will fluctuate depending a whole load of factors including how much we have eaten, whether we have consumed alcohol, whether we need a wee or what kind of mood we are in!

Sleeping bags do not generate heat they only trap the heat we produce so it is vital that you get into your bag when you are giving off warmth, don’t go to bed when you are cold, have a hot meal or a hot drink or do some brisk exercise to get you nicely warmed up.

Traditionally sleeping bag manufacturers provided their own temperature ratings based on their experience, the products intended end use and the perceived environment. But each brand tested their bags in different ways and it was hard to find a fair comparison between models. So, in 2005 a European standard for sleeping bag temperature ratings, EN 13537, was introduced to give consumers a comparable guide to sleeping bag performance across a range of brands and models. The ratings have four different temperature ratings to give you an indication of the bags performance.

Upper limit: This is the highest temperature at which an average male should experience a comfortable night’s sleep.

Comfort: This is the temperature at which an average female should experience a comfortable night’s sleep. On average women sleep colder than men so this rating is some degrees above the ‘comfort lower limit’ for a man.

Comfort lower limit:  This is the lowest temperature at which an average male should experience a comfortable night’s sleep whilst lying in a curled-up body position. This used to be known as the comfort rating.

Extreme: This is a survival rating where the user is likely to suffer health damage such as Hypothermia. It should be treated with the utmost caution and not be relied on for general use.

However, the EN 13537 European Standard does not apply to down filled sleeping bags with a fill weight of more than 800g; for those bags you will have to rely on the manufacturer's experience and technical expertise, which is often more accurate!

Most reputable brands still use their own rating system alongside EN 13537, for instance the M.E “Good Night’s Sleep” and Rab’s “Sleep Limit”. These ratings are often the most accurate guide to the overall performance of a bag being used by an average outdoor enthusiast. They are based on years of expedition heritage, field trials, technological experience, and constant feedback.

But please bear in mind that all ratings are only a guide and, as mentioned earlier, there are a huge range of factors that can affect your comfort, if you are just not sure it is always wise to go for a warmer model.

The biggest difference you can make to your overall comfort is to use an efficiently insulated sleeping mat. Once you get inside your sleeping bag you instantly compress all the filling beneath you, greatly reducing its efficiency. The use of a quality sleep mat will ensure you are properly insulated from the cold ground and you will of course be a lot more comfortable. Your sleeping bag is only as good as the mat that’s beneath it; we recommend EXPED, ThermaRest or Multimat sleeping mats for comfort and insulation.

Technical Information

Comfort: 4°C/39°F

Comfort Limit: -2°C/28°F

Extreme: -17°C/1°F

Good Night's Sleep Temperature: -2°C/28°F

Total Weight: 1085g / 38oz


Sizing Information

Pack Size: 22cm x 20cm x 28cm

Max User Height: 185cm

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Excellent customer service. Really detailed easy to understand product descriptions on the Trekitt website, and gear reviews on the Trekitt YouTube channel made it so easy to choose the right backpack for me.
Emily - May 2020
Amazing service! Very helpful in regards sizing and what most matched my needs, despite this being done over the internet. YouTube videos of products being examined are very useful also. Would definitely use again, very fast and efficient delivery. Brilliant! Highly recommended!
David R - April 2020
Highly recommend. I usually go to the shop in Hereford as staff are alwasy very helpful and knowledgeable. So this was the first time I have purchased online and the service was just as good as the shop.
Grizzy - April 2020


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