Lightwave Firelight 750 Down Sleeping Bag

Both the quality of construction and the quality of down in Lightwave's Firelight range of sleeping bags ensure that these bags achieve superior ratings when tested to the European EN 13537 standard.

Aside from this obvious quality we like some of the design features, for example the full length zip is on the top of the bag rather than the side - this seems easier to use somehow - when testing a Firelight 450 I could find the zipper much more quickly, and because it starts at the top of the bag I was less likely to turn over leaving it underneath me.

Another curious point was the lack of zip snag, every bag I have ever used snagged at some point, but the Firelight never did. I could quite work this out - but I note the zip is a smaller gauge than usual - which could be it.

Buy these bags and you are buying quality.

- Reviewed by Ultralight Outdoor Gear

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Construction

The construction describes how the down is held in place (otherwise all the down would fall to the bottom) and what features are incorporated to maximise heat retention or, conversely, regulate your temperature. The Firelight 750 has sufficient down fill to warrant more sophisticated features such as a full-length side baffle, double zip baffles and an insulated neck baffle.

• Baffles: Slant box wall throughout
• Hood: Fully adjustable cowl
• Neck: Fully adjustable baffle
• Zip: Full length #5 YKK
• Zip baffle: Double

Fabrics

Lightweight fabrics allow the down to loft and reduce the weight of the bag. Although there are lighter-weight versions of the Pertex Quantum fabric we are using, they offer a negligible saving in overall weight and, having a lower tear strength, are easier to damage.

• Shell: 29 g/m² 15 denier nylon (Pertex Quantum)
• Lining: 29 g/m² 15 denier nylon (Pertex Quantum)

UOG Weights

• Small bag weighs: 1066g
• Regular bag weighs: 1094g
• Large bag weighs: 1232g
• The total weight does not include the stuff sack or storage bag

Lightwave Specs

• Left hand zip only
• Packed size: 35cm x 24cm, 15.8L
• EN13537 Comfort rating: -7°C;
• EN13537 Lower Limit rating: -14°C;
• Fill weight: 750 g (size M)
• Fill power: 900 EU (970 US) white Polish Goose down

 Lightwave specifications:

EN13537:

Although there are four different measurements, the two most useful (and in our experience reasonably accurate) ones are:

• EN13537 Comfort Rating: Temperature at which a standard adult female can have a comfortable night’s sleep.
• EN13537 Comfort Rating: The lowest temperature at which a standard adult male is deemed able to have a comfortable night’s sleep.