The Mountain Warehouse Extreme Lightweight 250 Down Sleeping Bag is made for campers who need warmth without bulk. It’s designed for mild conditions and offers a 2-season rating, 75% down insulation, and a mummy shape. Whether you’re camping in summer, sleeping indoors, or heading out in shoulder-season weather, this sleeping bag provides comfort and convenience in a compact package.
Materials and Construction
This sleeping bag uses a mix of 75% grey duck down and 25% duck feather. Down traps heat well and stays light and compressible. The outer shell and lining are made from polyamide, which adds durability and helps resist moisture.
The mummy shape follows the body’s contours. This reduces empty space and improves heat retention. A shaped hood with a drawcord helps keep warmth around your head. The two-way zip on the left side makes it easy to adjust airflow without opening the whole bag. There’s also an internal pocket for small items like a phone or torch.
Temperature Ratings and Performance
The sleeping bag has a comfort rating of 10°C and a lower limit of 5°C. It works well for summer camping, mild spring and autumn nights, and indoor use. It’s not built for freezing temperatures or high-altitude trips, but it performs reliably in its intended range.
The down insulation feels cosy, and the mummy shape helps hold in warmth. The hood adds extra protection on cooler nights. You can tighten it with the drawcord for better insulation. If you sleep warm or plan to use the bag in sheltered spots, the temperature rating is suitable.
Weight and Packability
Weighing just 0.8kg, this sleeping bag is easy to carry. It packs down to 15cm x 25cm, which makes it ideal for bikepacking, hiking, or travel where space is limited.
Its small size and low weight make it a smart choice for anyone looking to reduce bulk. It fits easily into most backpacks, and the included stuff sack keeps it neat and protected.
Fit and Comfort
The bag measures 215cm long, 80cm wide at the shoulders, and 50cm at the feet. This gives most users enough room to sleep comfortably. The mummy shape is snug but not tight, and the soft lining adds to the comfort.
The two-way zip allows easy entry and exit. The internal pocket is handy for keeping essentials close. The hood fits well and stays in place during sleep, helping you stay warm through the night.
Use Cases and Versatility
This sleeping bag is best for:
- Summer and mild-weather camping
- Indoor use in cabins, hostels, or campervans
- Lightweight hiking and bikepacking
- Travel where space and weight matter
It’s not made for winter or alpine use. But within its temperature range, it performs well. Its compact size and low weight make it ideal for short trips, warm climates, or as a backup sleeping option.
Durability and Care
The polyamide shell and lining are tough and easy to clean. The down insulation keeps its loft with proper care. Like all down gear, it should be stored loosely when not in use. Wash it with down-specific detergent when needed.
The zippers are smooth and sturdy. Stitching is reinforced in key areas. With regular maintenance, this sleeping bag should last for many seasons.
Price and Value
This sleeping bag is often available at a discount, making it a good option for budget-conscious campers. At full price, it sits in the mid-range. Frequent sales make it more accessible.
Compared to other down sleeping bags with similar specs, it offers solid performance for the price. It doesn’t include premium features like water-resistant down or ultralight fabrics, but it delivers reliable warmth and packability for casual use.
Pros and Cons
Pros:
- Lightweight and compact
- 75% down insulation for warmth
- Mummy shape improves heat retention
- Two-way zip for airflow control
- Internal pocket for small items
- Good value, especially when on sale
Cons:
- Not suitable for cold or alpine conditions
- Limited temperature range
- No water-resistant down treatment
- Basic materials compared to premium models
Final Thoughts
The Mountain Warehouse Extreme Lightweight 250 Down Sleeping Bag is a practical choice for mild-weather camping. It offers solid insulation, a compact pack size, and useful features like a shaped hood and internal pocket. While it’s not built for extreme cold, it performs well in its intended range and provides good value.
For summer trips, indoor use, or lightweight travel, this sleeping bag delivers comfort without adding bulk. If you want a reliable 2-season down bag that’s easy to carry and won’t break the bank, the Extreme Lightweight 250 is worth a look.
