MISS JULIA yellow center-zip down mummy sleeping bag
MISS JULIA silver gray center-zip down sleeping bag
800 fill power white duck down insulation
Down-filled baffle chambers in mummy sleeping bag
Dual-slider zipper with yellow zipper tape
Water droplets on water-resistant nylon sleeping bag fabric
MISS JULIA down sleeping bag paired with a camping sleeping pad
Three packed sizes of MISS JULIA down sleeping bags

MISS JULIA Ultralight Down Sleeping Bag – 800 Fill Power, Center-Zip Mummy Design

SKU: MJ30024-1
£122.39
£135.99
£122.39
Recommended Height: Up to 6 ft 0 in (183 cm)
Colors: Yellow
Comfort Rating: 0°C to 15°C (32°F to 59°F)
Subtotal: £122.39
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Recommended height refers to a comfortable fit when lying flat or slightly curled inside the sleeping bag.

MISS JULIA yellow center-zip down mummy sleeping bag

MISS JULIA Ultralight Down Sleeping Bag – 800 Fill Power, Center-Zip Mummy Design

£135.99 £122.39

MISS JULIA Ultralight Down Sleeping Bag – 800 Fill Power, Center-Zip Mummy Design

£135.99 £122.39
Recommended Height: Up to 6 ft 0 in (183 cm)
Colors: Yellow
Comfort Rating: 0°C to 15°C (32°F to 59°F)

Lightweight Warmth. Thoughtful Design. Your Adventure, Your Comfort.

Discover outdoor comfort with the MISS JULIA Ultralight Down Sleeping Bag, featuring premium white duck down insulation, a convenient center-front zipper, and a compact mummy-shaped design.

Whether you're camping, backpacking, or exploring the outdoors, this sleeping bag offers a thoughtful combination of warmth, portability, and practical functionality.

Why Choose MISS JULIA Ultralight Down Sleeping Bag?

  • Convenient Center-Zip Design – Easy front access and ventilation adjustment.

  • 800 Fill Power Down – Lofty insulation with excellent compressibility.

  • 90% White Duck Down – Soft, lightweight, and insulating.

  • 10D 400T Nylon Fabric – Lightweight, smooth, and water-resistant.

  • 3D Baffle Construction – Helps maintain even down distribution.

  • Adjustable Insulated Hood – Customize your fit for extra comfort.

  • Three Fill Options – Choose 500 g, 800 g, or 1200 g of down insulation.

Center-Zip Design – Convenient Front Access

The thoughtfully positioned center-front zipper allows easy access and adjustment while resting inside the sleeping bag.

Enjoy the convenience of opening, closing, and adjusting ventilation directly from the front.

Paired with its streamlined mummy shape, the center-zip construction offers a practical and comfortable outdoor sleeping experience.

800 Fill Power White Duck Down

Featuring 90% white duck down content and 800 fill power, this sleeping bag is designed to provide lofty insulation while remaining compressible for packing.

The lightweight down filling helps trap warm air, making it a practical choice for outdoor adventures.

800 fill power white duck down insulation

Water-Resistant 10D Nylon Fabric

The outer shell and inner lining feature soft, lightweight 10D 400T nylon.

The water-resistant outer surface helps repel light moisture and splashes, while the smooth fabric provides a comfortable feel.

The sleeping bag is water-resistant, not waterproof.

Water droplets on water-resistant nylon sleeping bag fabric

3D Baffle Construction

Individually constructed down chambers help distribute insulation more evenly, reducing unwanted filling movement and maintaining loft throughout the sleeping bag.

Down-filled baffle chambers in mummy sleeping bag

Adjustable Hood & Practical Zipper Details

Enjoy an adjustable insulated hood, drawcord closure, convenient center zipper, dual zipper sliders, and hook-and-loop fastening detail.

Each feature is designed to support comfort and convenient everyday outdoor use.

Choose Your Sleeping Bag

Three down-fill options are available to suit different packing preferences and environmental conditions.

Down Fill Weight   

Total Weight

Temperature Range

500 g

760 g (1.68 lb)

0°C to 15°C (32°F to 59°F)

800 g

1060 g (2.34 lb)

-5°C to 10°C (23°F to 50°F)

1200 g

1460 g (3.22 lb)

-15°C to 5°C (5°F to 41°F)


  • Dimensions for all models: 210 × 80 × 50 cm (82.7 × 31.5 × 19.7 in).

Three packed sizes of MISS JULIA down sleeping bags

Temperature Rating Information

Actual warmth depends on environmental conditions, the insulation of your sleeping pad, clothing, personal cold tolerance, and other factors.

The lowest listed temperature should not be interpreted as a guaranteed comfortable or safe sleeping temperature.

Weights and dimensions are approximate and may vary slightly due to measurement tolerances and environmental conditions.

Compact Packed Dimensions

Down Fill Weight Approx. Packed Size

500 g

18 × 20 cm

800 g

30 × 22 cm

1200 g

35 × 28 cm


Pair with a MISS JULIA Sleeping Pad

Complete your outdoor sleeping setup with a MISS JULIA Sleeping Pad.

A suitable insulated sleeping pad helps provide cushioning and reduces heat loss to the ground.

MISS JULIA down sleeping bag paired with a camping sleeping pad

Frequently Asked Questions

How do I choose the right sleeping bag for my camping trip?

Choose a sleeping bag based on the expected nighttime temperature, its comfort temperature rating, and your personal warmth preferences. MISS JULIA offers different down fill weights and temperature options to suit a variety of outdoor adventures. For colder conditions, consider a higher-fill sleeping bag and an insulated sleeping pad.

What is special about the MISS JULIA center-zip sleeping bag?

The sleeping bag features a zipper positioned along the front center, offering convenient access and ventilation adjustment. It is one of several practical sleeping bag designs available to suit different user preferences.

What is the difference between the 500 g, 800 g, and 1200 g?

The three versions contain different amounts of down insulation and have different total weights, packed dimensions, and temperature ranges.

What is the temperature rating of the MISS JULIA center-zip sleeping bag 800 g?

The 800 g has a temperature range of -5°C to 10°C (23°F to 50°F). 

How much does the MISS JULIA sleeping bag weigh?

Depending on the selected model, the total weight is approximately 760 g, 1060 g, or 1460 g.

Is the MISS JULIA sleeping bag waterproof?

No. The lightweight nylon shell is water-resistant and helps repel light moisture, but the sleeping bag should be protected from rain and prolonged damp conditions.

What is the difference between fill power and fill weight?

Fill power measures the loft of down insulation, while fill weight measures how much down is used inside the sleeping bag. Both contribute to overall insulation performance, along with the sleeping bag's construction.

Is this sleeping bag suitable for winter camping?

It depends on the selected model and expected outdoor temperatures. MISS JULIA sleeping bags are designed for different temperature conditions, from mild-weather camping to colder outdoor adventures. For winter camping, choose a model with an appropriate comfort temperature rating and pair it with a well-insulated sleeping pad for added warmth and protection.


Pack Light. Sleep Comfortably. Explore More.

Discover outdoor comfort with MISS JULIA.


Order processing: Orders are processed within 24–48 hours. You’ll get a confirmation email once your order ships.

Shipping:
Free standard shipping:
US: 7–10 business days
Canada: 10–15 business days
UK: 5–8 business days
France: 6–10 business days
Australia: 8–12 business days
New Zealand: 8–15 business days
Express shipping: 4–7 business days, perfect for gifts!
For other regions or questions, send us an email at info@missjuliashop.com.

Returns & Refunds:
45-day return policy: Request a return within 45 days of receiving your item.
Eligibility: Item must be unworn, unused, with tags, in original packaging, with receipt or proof of purchase.
How to return: Email info@missjuliashop.com. We’ll send a prepaid return label and instructions. Items sent without approval cannot be accepted.
Damages/Issues: Contact us immediately if your item is defective, damaged, or incorrect.
Exclusions: Sale items, gift cards, or damage caused by human use cannot be returned.
Exchanges: Return your item first, then place a new order.
Refunds: Once approved, your refund will go back to your original payment method. Bank processing times may vary.

Learn more:
Shipping & Delivery
Full Refund Policy

How To Wash? Click here

How To Store? Click here

How To Repairs? Click here

Keep It Fluffy Click here

For more cleaning and maintenance information Click here

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Certifications & Standards – Trusted Quality You Can Rely On

Learn more about the certifications behind MISS JULIA sleeping bags: RDS Responsible Down Standard and EN 13537 Sleeping Bag Temperature Ratings.

FAQs

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  • Sizing & Fit
  • Temperature Rating & Warmth
  • Materials & Construction
  • Packing & Portability
  • Use & Care
  • Consistency & Standards

Sizing & Fit

Recommended height refers to the maximum user height that a sleeping bag is designed to fit comfortably while maintaining proper insulation, hood coverage, and footbox loft.

MISS JULIA calculates recommended height based on sleeping bag length, shape (mummy, semi-rectangular, or rectangular), hood design, footbox structure, and down loft expansion, not just the external measurement.

Sleeping bags require internal allowance for:

Hood structure and head movement

Footbox space and insulation loft

Natural sleeping posture

Warmth retention in cold conditions

For this reason, the usable interior length is always slightly shorter than the total sleeping bag length.

Mummy sleeping bags are designed to closely follow the body for maximum warmth.

Because of their contoured hood and tapered footbox, mummy designs require additional internal space, which results in a slightly lower recommended height compared to semi-rectangular or rectangular sleeping bags of the same length.

Yes.

If your height is at or near the listed maximum, we recommend choosing a longer size or a semi-rectangular or rectangular sleeping bag, especially for cold-weather or winter camping.
This helps ensure comfort and insulation efficiency.

Temperature Rating & Warmth

Comfort rating indicates the temperature range at which an average adult can sleep comfortably under normal outdoor conditions.

MISS JULIA lists comfort ratings in Fahrenheit (primary) with Celsius as a secondary reference to ensure clarity for international customers.

Fill weight determines the amount of insulation inside the sleeping bag.

Higher fill weight provides:

Greater loft

Better heat retention

Lower comfort temperature

This allows users to select the appropriate warmth level for different seasons and climates.

Yes.

MISS JULIA uses conservative, real-world-based comfort ratings rather than exaggerated extreme values.

Our ratings are designed to reflect practical outdoor performance, not laboratory extremes.


Yes.

Many MISS JULIA sleeping bags feature two-way zippers and fully openable designs, allowing them to be used as a blanket in warmer conditions.

Proper ventilation extends the usable temperature range.

Materials & Construction

Depending on the model, MISS JULIA uses selected goose down or duck down, processed to be clean, odor-free, and durable.

High-quality down provides an excellent warmth-to-weight ratio and long-lasting loft.

Fill power measures the loft and quality of down.

Higher fill power means:

Better insulation

Lighter weight

Improved compressibility

MISS JULIA sleeping bags typically use high fill power down (750+ FP to 800+ FP).

MISS JULIA sleeping bags use water-resistant and breathable nylon shell fabrics such as 380T or 400T 20D nylon.

They are designed to resist moisture and condensation but are not fully waterproof and should not be submerged.

Packing & Portability

After use, simply place the sleeping bag into the compression sack and tighten the straps.

Once compressed, the packed size becomes very compact, similar to the product images shown, making it easy to carry for travel, camping, or backpacking.

Each MISS JULIA sleeping bag includes a high-quality compression stuff sack made from durable Oxford cloth with a double-layer PU coating.

This design provides water resistance, durability, and long-term protection during outdoor use.

Yes.

The compression sack features heavy-duty stitching and four reinforced compression straps, designed to withstand repeated tightening and long-term outdoor use.

Absolutely.

The compression system significantly reduces packed volume, allowing you to free up backpack space for other essential gear.

This makes MISS JULIA sleeping bags ideal for backpacking, hiking, and multi-day outdoor trips.

Use & Care

MISS JULIA sleeping bags are designed for a wide range of activities, including:

Camping

Backpacking

Hiking

Biking

Outdoor travel

Emergency or survival use

They are suitable for both outdoor and indoor use depending on fill weight and season rating.

For travel, use the included compression sack.

For long-term storage, we recommend removing the sleeping bag from the compression sack and storing it loosely in a dry, breathable environment to maintain down loft.

How To Store? Click here

We recommend gentle hand washing or professional down cleaning.

Avoid harsh detergents and ensure the sleeping bag is fully dried before storage.

How To Wash? Click here

Consistency & Standards

Yes.

MISS JULIA applies the same standards for recommended height, temperature rating, materials, and construction across product pages, images, metafields, and Google Shopping feeds.

MISS JULIA prioritizes real-world comfort, safety, and long-term performance over marketing exaggeration.

Our specifications are designed to provide reliable outdoor performance you can trust.

Leave It Better Than We Found It 🌱

We make gear for the outdoors — and we believe it’s our responsibility to protect it.

At Miss Julia, sustainability isn’t a feature. It’s part of how we think, design, and act.

Through our partnership with GoodAPI, we take small steps toward restoring what matters — forests, ecosystems, and the places we all depend on.

Because the best journeys don’t just take from nature — they give back to it.