Torpedo 350
£599 / €699 / $ 895

The Torpedo 350 is ideal for those wanting a weather-resistant down bag for sleeping under a tarp or outside in cool conditions. Its low fill-weight makes it a useful all-rounder outside of the mountains, but if you’re happy to push your comfort tolerances, it is suitable for the Alps in summer and for ranges at lower altitudes and/or latitudes. For additional flexibility, it can be upgraded with the addition of a Protium, Deuterium or Tritium sleeping-bag liner from our new Radioactive range (available from June 2016).

The Torpedo 350 is available in three lengths. Look at our sleeping bag selection chart for guidelines.




Waterproof breathable shell
Water-resistant zip
Adjustable neck baffle
Supplied with storage bag and roll-top stuff sack
Vertical V-tube baffles over chest
Slant box wall on underside and lower top
Single zip baffle
Simple side wall

Technical Specifications

Weight: 1040 g (Medium)
Fill: 350 g of 850 fillpower (EU) Polish goose down (Medium)
Shell: 2-layer eVent®, 80g/m², 40d nylon face
Lining: 33 g/m², 15d Pertex Quantum®, soft-touch nylon
Baffles: Vertical V-tube over chest
Slant box wall on underside and lower top
Single zip baffle
Simple side wall
Adjustable neck baffle
45 individual baffles in total (Medium)
Zip: 158 cm highly water-resistant Riri Aquazip
Sizes: Short (left zip only)
Medium (choice of left or right zip)
Long (left zip only)
Packed size: 25 cm x 21 cm Ø
Made In: China/Poland

Temperature Ratings

EN13537: 5˚C Comfort
-1˚C Lower limit
-10˚C Extreme

The comfort rating represents the lowest temperature at which a standard adult FEMALE can have a comfortable night’s sleep.

The lower limit represents the lowest temperature at which a standard adult MALE is deemed able to have a comfortable night’s sleep.

We like the EN13537 ratings at crux. Going by our own extensive experience, we feel they accurately reflect the temperature limitations of each sleeping bag for a comfortable night’s sleep. Individual tolerances may allow some people to go beyond these figures, but we believe this is at the discretion of the user and is not something to be claimed by us.

Size Chart


  Down fill (g) Total Wgt (g) Length (cm) Width (cm)
Torpedo 350
Short 315 935 168 74
Medium 350 990 183 76
Long 400 1065 198 80

Care & Attention

Down is a very resilient insulating material and, with basic care, any down sleeping bag should last you a very long time (if not your entire active climbing life).

There are two simple rules to ensure longevity:
1. Always store your sleeping bag uncompressed in a dry, airy place
2. Always use a sleeping bag liner. This will prevent the bulk of body oils and perspiration from getting into the down itself and reduce the need for washing the bag.

NEVER machine-wash an eVent-shelled down sleeping bag. We highly recommend you hand-wash your down sleeping bag or, alternatively, use a professional service. You can download hand-washing instructions here.


All sizes are in stock

Knowledge Base

Crux sleeping bags, just like our rucksacks and tents, are wholly a product of their specification. The key criteria – in this case, warmth and weight – are completely dependent upon the quality of the goose down (the only kind of insulation you will find in crux bags), the fabrics and the components employed. For the customer in the shop, however, facing a colourful selection of sleeping bags that all look much alike, how can you tell which one will keep you warm when it really matters? Even obvious yardsticks such as the thinness or thickness of a bag can be misleading. In this Knowledge Base you should find all the technical information (including some demystifications) you need in order to understand what makes a good bag – and what makes crux bags the best.

Choosing a sleeping bag – A qualitative approach
Temperature ratings – Understand what they mean
Sleeping bag design – An overview of generic design and construction
Sleeping bag care and maintenance – Essential reading
Hydrophobic down – What it is and why we don’t use it
Goose down – Sources, quality, and measurement
eVent fabric – Why it is the best fabric for a waterproof bag
Riri zips – Some background information