Buying Guides /
SLEEPING BAG BUYING GUIDE
The right sleeping bag for your trip should be able to envelope you in a cocoon of warmth and comfort, enabling your body to recover, so it is ready for tomorrow. But choosing which sleeping bag to buy can be quite overwhelming.
So whether you need a sleeping bag for Kilimanjaro, can’t decide between down and synthetic, or maybe need a double sleeping bag for a family camping trip, here is our guide to help you get an amazing night’s sleep.
WHERE WILL YOU USE IT?
When buying a sleeping bag you need to think about where you are going, the kind of temperatures you will experience and whether you will be carrying the bag for long periods of time. To help with this decision there is something called the ‘warmth to weight ratio’. This ratio looks at the effectiveness of the insulation and balances it against the weight.
For example, if a bag uses exceptionally high quality down clusters, then in principle it will be very warm and very light. If however a bag uses less expensive insulation then it can still be as warm, but it will need much more insulation to achieve the same temperature rating; meaning it will not be as light. In this instance two bags are as warm as each other, but the first has a much better warmth to weight ratio.
Why is this important? Well it all comes down to what you want from your bag. Those who are looking for something for family holidays or festivals, the weight and pack size probably isn’t going to be a huge issue as you will not be hiking for days or will have space in the back of a car. On the other hand if you are looking to go backpacking or multi-day hiking then weight will be very important as you will be carrying it all day.
A heavier, bulkier sleeping bag does not necessarily mean more warmth; as the quantity and quality of the insulation, as well as the design of the bag, may not be as effective as others.
When choosing your sleeping bag there are many different levels of insulation to choose from. Many manufacturers may refer to this as ‘season rating’ but at Cotswold Outdoor we provide something called the ‘comfort limit’. This is the lowest temperature in which you should be able to have a comfortable, undisturbed and safe night’s sleep. We would recommend buying a sleeping bag that offers a comfort limit slightly lower than the temperature you are expecting to sleep in, this will allow for a couple of degrees as insurance, just in case the weather forecast was inaccurate.
Everyone runs at a different temperature. If you know you feel the cold, opt for something that little bit warmer. It’s easier to cool down then it is to warm up.
There are two main types of insulation in a sleeping bag; down or synthetic.
Down sleeping bags are considered to have a longer lifespan and often boast an excellent warmth to weight ratio making them ideal when the lightest and smallest pack size is required. However, down can be expensive and does require a little more care. It should not be stored long term in a small compression sack as this squashes the down clusters. Also when on the hill or in your pack it must be kept dry as water causes the down clusters to stick together, removing almost all of their insulative properties.
When going on a trip pack your down sleeping bag into a waterproof dry bag instead of the supplied stuff sack, this will ensure your bag stays dry for a good night’s sleep.
Synthetic sleeping bags don’t require a great deal of care, however; the warmth to weight ratio is not as good as down and they don’t pack away as small. Synthetic sleeping bags however do retain most of their insulating properties, even if they become wet. Synthetic sleeping bags are an incredibly durable and effective alternative. What’s more is that as technology improves, their warmth and equivalent pack size is getting ever closer to that of down sleeping bags.
When travelling with young children it is usually worth using synthetic sleeping bags as synthetic bags can be washed and dried much easier and quicker than down bags.
SHAPES AND SIZES
Sleeping bags come in all shapes and sizes and for good reason. The less empty space there is in your sleeping bag the more effective it will be at retaining heat. However, there is a fine balance between having enough space for comfort and being warm enough for a good night’s sleep.
Mummy shaped bags are tapered at the legs and the head, following the natural contours of the shoulders and hips.
Pros: They usually pack down small and have an excellent warmth to weight ratio making them ideal for backpacking trips where their excellent efficiency gains them popularity.
Cons: May feel restrictive once you’re zipped in.
Rectangular/square bags are squared at the bottom and top of the sleeping bag to aid comfort over performance.
Pros: They are usually a lot more versatile and able to be opened as a duvet or zipped with another bag to create a double wide sleeping bag. They also have a little more room. Excellent for caravan trips and house guests.
Cons: They can be bulky to pack down and their warmth to weight ratio is often quite low.
Double sleeping bags again say exactly what they do; they are twice as wide providing ample space for two people.
Pros: They can be highly versatile for families and can usually be converted into two separate bags or blankets. Perfect for Mum and Dad on a family camping holiday.
Cons: They are usually bulky to pack and heavy with low warmth to weight ratio.
Some brands offer sleeping bags that have been designed specifically for women and children, as well as extra-long or extra-short bags to accommodate everyone.
SLEEPING BAGS FOR KIDS
Taking children camping can be a bit of a challenge, but it is also an invaluable, not to mention educational experience for any child. Baby sleeping bags and children’s bags follow the same principal as adult designs. Both down and synthetic bags are available, although due to it’s ease of care, synthetic insulation is a much more user friendly and common option. Some children’s sleeping bags have a bit of growing space, with a detachable bottom section that can be added during those all too frequent growth spurts, or removed as it gets passed down to smaller members of the family.
There are also many different features in sleeping bags that can help increase your comfort, some of the more common ones include…
Neck baffles and anti-snag/draft tubes are great for reducing cold spots, particularly around the sleeping bag opening; along the zip and around the shoulders. It can also help the zip run smoothly along the length of the bag so as not to damage the fabric.
Drawcords at the shoulders and around the hood of the sleeping bag help to cinch in the opening and vastly reduce heat loss.
A contoured footbox at the bottom of the sleeping bag can help to reduce empty space helping to keep your feet warm.
Stash pockets feature on some bags which are ideal for storing valuables and keeping them secure while you sleep.
Pillow pockets and integrated pillows are often featured on less technical bags where weight isn’t too much of an issue. These come in handy for keeping your pillow in the right place. Equally, if you don’t have a pillow they’ll keep a few folded up layers in place under your head.
Velcro tabs are often on more technical bags to cover the zip and stop the zip working its way open as you wriggle through the night.
A zip might seem obvious but what kind of zip do you want it to have?
– Do you want it to be zipped together?
– Does it have a left or right side zip?
– How long is the zip and is it a two-way zip that can offer ventilation?
Left handed people often prefer a right handed zip and right handed people often find a left hand zip easier.
Some of the key accessories you should consider when buying a sleeping bag are:
A sleeping bag liner
This will add warmth and protect the lining from body oils and dirt, prolonging the life of your sleeping bag. After all, it’s easier to clean a liner than a whole sleeping bag. They are available in fleece, cotton and silk and offer variable degrees of warmth and comfort as well as considerably different pack sizes.
A sleeping mat
Use a sleeping mat as a barrier between the cold ground, the sleeping bag and you. Whether it’s a simple foam roll mat, a self-inflating mat or a blow up mattress, your night in the outdoors will be much more comfortable if you have something to sleep on.
Some consider this a luxury, but for many it’s got to be worth a few extra grams. If you like a firmer pillow you should probably find a blow up design. Compressible pillows that squish down into a stuff sack will do just that as soon as you put your head on it and thus are more suited to those who like a soft pillow.
If you really want to shave the grams off your trip but don’t want to sacrifice your pillow simply fold up a couple of dry layers and use those to rest your head.
– If the compression sack supplied with your sleeping bag isn’t waterproof, swap it for a dry bag, then you don’t need to worry about a soggy night’s sleep no matter how hard it rains.
– The use of sleeping bag liners means your sleeping bag will stay cleaner for longer, it’s much easier and less time consuming to clean a liner than it is to clean the whole sleeping bag.
– Never store your sleeping bag on the outside of your rucksack, as one of your most important pieces of kit it should be completely inside your pack.
– You should wash your sleeping bag according to the instructions on the label, if you are at all unsure how to do this correctly seek professional advice from our friendly staff.