The Trestles Elite sits in Marmot's synthetically insulated range of sleeping bags, meaning unlike down it will stay warm even while wet. This particular bag features 17cm of extra length to fit anyone up to 221cm.
The bag is insulated with Marmot's own Spirafill High Loft insulation, an ultra light material designed to pack down nice and small while still being warm enough for two to three season adventures. It's extremely compressible, stays warm when wet and is ideal for backpacking, cycle touring and any activity which requires a low pack size and weight. This insulation tends to be a little more durable than down too as it won't poke through the fabric.
Both zips on the Trestles will unzip almost all the way down to make it easier to climb in and out, or simply unzip the one side and leave the other zipped up to create a lightweight blanket for two people during warmer climates. Running down the side of this zip is a small piece of insulated fabric which directs draft away from the sleeping bag, keeping you warmer and reducing windchill. Inside the bag is a small stash pocket, ideal for storing snacks, a phone or keys, while two hang loops allow you to let the bag dry if it gets soaking wet.
Marmot feature their 3D hood and anatomically shaped hood construction to create a haven of insulated warmth in the areas where you lose the most heat. This construction allows these two areas to be warmer as the insulation is closer, but also means the bag can pack up slightly smaller as there is less fabric. The footbox construction mimics how your feet are positioned when you sleep, therefore more fabric is positioned above to make the Trestles that much more comfortable.
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Compression sack included
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Longer version for taller users
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Two hang loops
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Snagless draft tube
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Draw cords
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Stash pocket
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3D hood construction
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Full length YKK zip (locking)
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Spirafill insulation
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3D shaped footbox increases insulation and comfort
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 an insulated sleep mat. After all, comfort is what you want 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 we are all individuals, so we all feel the cold differently and that our own resistance will fluctuate depending on 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 product's intended end-use and the perceived environment. However, 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 bag's performance.
Comfort Rating: 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 Limit Rating: This is the lowest temperature at which an average male should experience a comfortable night’s sleep whilst laid down in a curled up position.
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, Mountain Equipment's “Good Night’s Sleep” and Rab’s “Sleep Limit”. These ratings are often the most accurate guide to the overall performance of a sleeping bag being used by an average outdoor enthusiast because 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. Therefore using a quality sleep mat will ensure you are properly insulated from the cold ground, and you will be a lot more comfortable... Basically, there is no point in buying a top-quality sleeping bag if you are just going to lie down on the floor.