Established in 1986 Trekitt is family owned and run. We have always been driven by our passion for wild places and mountains and have enjoyed sharing those experiences with our customers for over 30 years.

Trekitt provides top quality equipment and clothing for mountaineers, hill walkers, climbers and travellers and has grown over the years to cater for a wide range of outdoor activities. We hold large stocks of specialist clothing and equipment from the worlds best brands backed up by our award winning customer service.  We are more than a shop, we are a service for adventure, we fully understand that to get the most from your passion you need the best kit that is fit for purpose and suits you personally.  We offer expert boot and rucksack fitting services in our Hereford shop and are always happy to discuss your equipment needs, so just call us.

The Hereford shop is open Monday to Saturday from 09:00 - 17:30.

We are closed on Sundays and Bank Holidays because we value our free time and want to keep it that way.

51 Eign GateHereford Herefordshire HR4 0AB
Mountain Equipment

Mountain Equipment Helium 800 XL Sleeping Bag Cosmos

Mountain Equipment Helium 800 XL Sleeping Bag Cosmos

£289.00 £340.00
15% off

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The Helium 800 XL uses a super light face fabric, responsibly sourced high quality down and the latest technology from Mountain Equipment to provide you with an extremely warm, compressible high altitude bag.

Description

Season : 2019S

Code : 002071-01286-XL

Weight : 0KG

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The Helium 800 by Mountain Equipment uses a super lightweight face fabric, their resposibly sourced, high quality down and their latest technology to provide you with a super warm, compressible bag ideally suited towards extremely cold temperatures at altitude such as in the height of the alps or during Himalayan persuits. This particular model features an extra 15cm of leg room, extending the total length from 185cm to 200cm. This will suit anyone from 6ft 1 to 6ft 6. 

Using a super high quality 700 fill power duck down, the Helium 800 will pack up smaller than a similar bag with an inferior quality down and will be warmer for the weight too. What makes Mountain Equipments down different to others however is that they became one of the first outdoor brands to introduce independant autiding of their down supply. This provides the ability for M.E to trace 100% of their down, allowing them to only use responsibly sourced down. This is not only better for the birds and the environment, but also means the down inside the product is a higher quality. This premium duck down is from the very cold North East of China and is collected from ducks that live a truly free-range existence. The birds are sold when they no longer produce eggs or when the market price for eggs drops below the break-even point. The birds are normally around 700 days old when slaughtered, they are then plucked and the down is shipped to the processing plant for cleaning and grading. Because these ducks are older and have lived in a free-range environment and a cold climate the down they produce is of an exceptionally high quality. All Mountain Equipment bags adhere to the Down Codex, a scheme that was developed to ensure that both animal welfare and down quality were put firmly at the heart of each and every one of M.E's down products. 

Each down product is marked with a 12 digit code that can be entered at the Down Codex website to gain access to the specific information relating to the down source of that product, go to http://www.thedownproject.me.uk/index.php to find out more about how M.E have become the only brand to go beyond accepting written guarantees from down suppliers and to make their audit results and independent quality reports publicly available.

All this ethically produced and high quality down is encapsulated in M.E's own Helium outer fabric. This super lightweight fabric was orignally developed for climbers and mountaineers, those needing the smallest pack size and the best compressibility. It's the perfect choice for any product where weight and bulk are a prime concern. Thanks to the densely woven structure of Helium, Mountain Equipment guarantee this bag to be 'downproof', meaning down cannot escape from the bag over time. As a consequence of this, the Helium 800 is highly tear resistant and exceptionally breathable. A DWR (durable water repellant) coating is also added to the outer fabric to add a light amount of water resistancy. 

Mountain Equipment's bag's are very unique in a number of ways. One is the way they optimise their heat efficiency by changing the layout of the baffles. By slanting the baffles throughout the entire main body of the bag, it allows all unused space is eliminated which lowers the weight. Further weight is then saved by using their stitch through construction. This method also spreads the down out more evenly across the top, side and bottom of the bag, providing a warmer experience and a longer lifespan. The overall down distribution also allows M.E to favour certain parts of the bag to offer the highest warmth for the weight. Slightly favouring the underside of the bag, the underside of the hood and the foot piece, M.E can provide a warmer bag due to their experience of where most heat is lost. Offering more/less down in certain areas also improves the comfort, mainly in the collar area and around the head. 

Each one of their sleeping bags features a unique foot piece section depending on the use of the bag. In this case the bag is designed to be as light and as compressible as possible. The Helium range of bags feature the Trapezium 4 foot piece, a four part baffle system that is engineered to be their lightest and most tecnnical system to maintain the lowest weight possible. 

A high percentage of your body heat is lost through your head so Mountain Equipment have developed their hood which uses 5 baffles to create a truly anatomical shape to surround your head with luxurious warmth. To further optimise insulation M.E have developed the Gemini System that has two overlapping anti-snag draft tubes and a fully integrated neck collar. 

The Helium 800 is a light, versatile, packable and most importantly extremely warm sleeping bag well suited to backpacking and trekking in extremely cold conditions such as the Himalayan Mountains or Alpine regions of France and Italy. 

  • Left zip only
  • Helium 20 outer shell
  • Extra long length
  • High quality 700 fill power down
  • Alpine fit with zoned EXL system 
  • Slanted box wall baffles and stitch through baffles
  • Mid level side seams
  • 5 baffle anatomically shaped hood
  • 4 baffle anatomically shaped and offset foot-box
  • Full length Gemini zip baffle and integrated collar with Lode Lock closure
  • Supplied with waterproof roll-top stuff sack and storage cube
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

Weight: 1305g

Fill weight: 806g

Comfort rating: -4°C

Comfort limit rating: -11°C

Extreme rating: -30°C

Good night sleep guaranteed rating: -16°C

Sizing Information

Pack size: 29cm x 23cm x 21cm

Max User Height: 200cm

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Mountain Equipment Helium 800 XL Sleeping Bag Cosmos

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The product I bought was competitively priced. The video demonstration of the product assisted me in my decision to purchase the item and was very informative, as it showed all of the features and the fit. I chose "click and collect" which was an efficient and quick process. I would definitely shop here again.

Amanda  •   19 Jan 2019.

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