Mummy Shaped Sleeping Bags

Mummy-shaped sleeping bags are narrower at the feet, helping to reduce empty space inside the bag. This shape keeps you warmer by limiting the amount of air that needs to be heated.

At WM Camping, we stock a wide range of mummy sleeping bags, from affordable options for occasional use or sleepovers, to high-performance insulated bags designed for colder conditions and more serious camping trips such as DofE expeditions.

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If you’re looking for a sleeping bag that helps keep warmth in, mummy shaped sleeping bags are designed to do exactly that. Compared to roomier shapes, the closer fit helps reduce cold air pockets, which can make a noticeable difference on cooler nights. For many campers, especially those who tour or camp in tents outside peak summer, a mummy sleeping bag is the most comfortable choice.

The tapered design is also useful if you want a more compact sleeping bag. Mummy style sleeping bags pack down smaller than square designs, making them easier to store in the car and simpler to carry when you’re keeping kit as streamlined as possible.

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What makes a Mummy Shaped Sleeping Bag so good?

A mummy sleeping bag is a good choice if you want:

  • a closer fit that helps retain warmth
  • a warm sleeping bag for cooler nights
  • a more compact packed size for touring
  • a sleeping bag that feels secure and less bulky

They’re especially popular for campers who feel the cold at night, or anyone who wants a sleeping bag that’s better suited to changing UK weather.

What to consider before buying

A few details can make a big difference when choosing mummy sleeping bags for camping:

  • Warmth rating – choose one that suits when you camp most often
  • Fit – a snug fit retains heat, but should still feel comfortable
  • Packed size – useful for touring and limited storage space
  • Zip and ventilation – helpful if you camp across warmer months too
  • Sleeping mat pairing – a good mat improves warmth as well as comfort

It’s also worth remembering that warmth doesn’t come from the sleeping bag alone. What you sleep on matters too, mats and self inflating mattresses help reduce heat loss from the ground and can make a big difference on colder pitches.

Mummy Shaped Sleeping Bag FAQs

What is a mummy-shaped sleeping bag?

A mummy sleeping bag is tapered at the feet and wider at the shoulders, designed to closely fit the body. This shape reduces empty space and helps retain body heat more efficiently than a rectangular bag.

Are mummy sleeping bags warmer than rectangular ones?

Yes, the snug fit of a mummy bag helps trap heat more effectively, making them better suited for cooler temperatures or three- to four-season use.

Can I move around easily in a mummy sleeping bag?

Mummy bags are more restrictive than rectangular bags, especially around the legs and feet. They’re designed for warmth rather than roominess, but many people get used to the fit quickly.

Do mummy sleeping bags come in different sizes?

Yes, many brands offer regular and long lengths, and some offer women’s-specific or junior sizes. Always check the pack’s dimensions to ensure a good fit for your height.

Are mummy sleeping bags suitable for children?

Yes, there are mummy-style sleeping bags made specifically for children. These smaller versions help retain warmth better than full-size adult bags.