
Sleeping bag liners are popular among backpackers and travellers who sleep in hostels or go camping. They come in two main types: mummy-shaped liners and rectangular liners. Mummy sleeping bag liners are designed to slip inside your sleeping bag, helping to keep it clean and free of dirt and body oils. They can also provide extra warmth and are easier to launder than a sleeping bag. Mummy liners are made from various materials, including silk, cotton, polyester, and synthetic fabrics, each offering different levels of comfort, durability, and moisture-wicking capabilities. Some mummy liners also offer bug protection, making them ideal for outdoor use.
| Characteristics | Values |
|---|---|
| Use | Backpackers, travelers who sleep in hostels |
| Types | Mummy-shaped, rectangular |
| Benefits | Keeps sleeping bag free of dirt, body oils, and odours; provides extra warmth; easier to launder than a sleeping bag |
| Materials | Silk, cotton, polyester, synthetics (e.g. CoolMax), insulated (e.g. Thermolite) |
| Features | Moisture-wicking, breathable, added warmth, quick-drying, lightweight |
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What You'll Learn
- Mummy sleeping bag liners are designed to keep your sleeping bag clean
- They can add extra warmth to your sleeping bag
- Mummy liners are good for backpackers and travellers
- Silk mummy liners are luxurious but don't last as long as polyester or cotton
- Mummy liners can be uncomfortable for restless sleepers

Mummy sleeping bag liners are designed to keep your sleeping bag clean
Sleeping bag liners are available in a range of materials, including silk, cotton, polyester, and synthetic fabrics. Silk liners are luxurious and lightweight, but they are less durable than other materials. Cotton liners are comfortable, while synthetic fabrics offer stretch and breathability, making them ideal for restless sleepers or humid conditions. Insulated liners can add extra warmth, while some liners offer bug protection, which is useful in infested areas.
Mummy liners are designed to fit inside a sleeping bag, so they are often a tight squeeze to get in and out of quickly. Some users prefer a rectangular liner, which can be used on its own or inside a rectangular sleeping bag, as it feels more like a sheet and offers more room to move. However, mummy liners are a good option for keeping your sleeping bag clean, as they can be easily removed and washed, and they also add durability to your bag by reducing the need for frequent laundering.
Liners can also provide extra warmth, with some materials adding up to 25°F of warmth to your sleeping bag. In hot climates, a liner can be used without a sleeping bag, providing a lightweight and comfortable option for sleeping. Overall, mummy sleeping bag liners are a useful way to keep your sleeping bag clean, durable, and hygienic, while also offering additional benefits such as warmth and bug protection.
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They can add extra warmth to your sleeping bag
Mummy sleeping bag liners are a handy item for backpackers and travellers. They are designed to slip inside your sleeping bag, adding extra warmth. The amount of warmth provided depends on the material of the liner. Synthetic liners, for example, are moisture-wicking and breathable, making them ideal for humid conditions. Insulated liners, on the other hand, can add up to 25°F of warmth, extending the range of a lightweight bag.
In addition to warmth, mummy liners can also improve hygiene. They can help keep your sleeping bag clean by absorbing dirt and body oils, reducing the need for frequent laundering. This is especially useful if you're using bedding of questionable cleanliness or in bug-infested areas. Silk liners, for instance, can increase the hygiene of your sleeping bag, but they may not last as long as polyester or cotton.
The type of liner you choose depends on your personal preference and the conditions you'll be using it in. If you're a restless sleeper, synthetic liners offer some stretch for added comfort. If you're concerned about weight, silk liners are lighter than cotton ones. However, some people may prefer the feel of cotton.
While mummy liners can add warmth, some people find them uncomfortable or difficult to get in and out of quickly. Additionally, in hot climates, you may not need a sleeping bag at all and can instead use just a bag liner or travel sheet. Ultimately, the decision to use a mummy liner depends on your individual needs and preferences.
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Mummy liners are good for backpackers and travellers
Additionally, mummy liners are designed to fit inside a sleeping bag, following its shape, which minimises twisting and bunching up while sleeping. This makes them more comfortable and easier to use than rectangular liners, especially for restless sleepers. They are also generally easier to get in and out of than rectangular liners, which can be important if you need to get up during the night.
Mummy liners come in various materials, each offering unique benefits. Silk liners, for example, are luxurious and comfortable, but they may not be as durable as polyester or cotton liners. Cotton liners, on the other hand, can provide a similar feel to sleeping in sheets at home, and they are known for their durability. Synthetic liners are moisture-wicking and breathable, making them ideal for humid conditions, while also offering some stretch for comfort.
For backpackers and travellers concerned about insects, there are mummy liners with built-in bug protection, such as those offering Insect Shield® technology. This feature can provide peace of mind when camping or staying in accommodations with potential bed bug issues. Overall, mummy liners offer a combination of warmth, comfort, and hygiene that makes them a valuable investment for backpackers and travellers looking to enhance their sleeping arrangements.
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Silk mummy liners are luxurious but don't last as long as polyester or cotton
Mummy sleeping bag liners are designed to slip inside a sleeping bag, helping to keep the bag free of dirt and body oils. They can also provide extra warmth, depending on the material. Silk liners are lightweight, compact, and breathable, making them ideal for insulating in cold weather while remaining cool in warm weather. However, silk liners are not as durable as those made from other materials. Silk is a more expensive option and may not last as long as polyester or cotton liners. Silk liners are also more prone to ripping, especially if the user moves around a lot in their sleep.
Cotton liners, on the other hand, are known for their durability and absorbency. They are strong and long-lasting but are heavier and less compact than silk. Cotton may not provide as much warmth as silk, but it is still a good option for those who want a thin layer on warm nights.
Polyester liners offer a comfortable and soft alternative. They are thinner than cotton and can be more durable than silk. Polyester is also a more affordable option than silk and is suitable for those on a budget.
For those who move around a lot in their sleep, a rectangular liner might be a better option than the restrictive mummy shape. Rectangular liners can be used on their own or inside a rectangular sleeping bag. They are also useful for keeping separated from questionable bedding when travelling.
Overall, while silk mummy liners offer a luxurious and lightweight option, they may not be the most practical choice due to their higher price and lower durability compared to polyester or cotton alternatives.
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Mummy liners can be uncomfortable for restless sleepers
Mummy sleeping bag liners are designed to slip inside a sleeping bag. They are mummy-shaped, mirroring the tapered form of mummy sleeping bags, which are wider at the shoulders and narrower at the feet.
Some restless sleepers may prefer rectangular liners and bags, which offer more space and freedom of movement. Rectangular liners can be used on their own or inside a rectangular sleeping bag. They are also often less expensive than mummy liners and bags.
Synthetic liners, such as those made with CoolMax®, are ideal for restless sleepers because they are moisture-wicking, breathable, and offer some stretch. Silk liners are also a good option for restless sleepers as they allow sleeping bags to slide around nicely, although they are less durable than polyester or cotton liners.
If you are a restless sleeper, you may find that a quilt is a better option than a sleeping bag with a liner. One restless sleeper reported that a quilt allowed them to toss and turn, sleep on [their] stomach or side, without any real issues.
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Frequently asked questions
A mummy sleeping bag liner is a type of sleeping bag liner designed to fit inside your sleeping bag. It is shaped like a mummy bag, helping to keep your sleeping bag free of dirt and body oils.
Mummy sleeping bag liners can help to keep your sleeping bag clean, which prolongs its lifespan as it requires less frequent laundering. They can also provide extra warmth and improve comfort.
Mummy liners can be made from various materials, including silk, cotton, polyester, and synthetic fabrics like CoolMax® and Thermolite®. Silk and cotton liners offer a comfortable feel, while synthetic options are moisture-wicking, breathable, and ideal for restless sleepers.
Some users have reported that mummy liners can be uncomfortable and a bit tricky to get in and out of quickly, especially for those who toss and turn during sleep. However, others have found them comfortable and convenient for keeping their sleeping bags clean.
Mummy sleeping bag liners are available from various retailers, including Amazon, Sea to Summit, TETON Sports, COCOON, and REDCAMP. Prices can vary, with some silk liners costing around $120.











































