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