Sigma

Product Line Description: 

In 2016 we launched our first single-wall trekking tents: the sigma range.

Single-wall tents have always been a rarity in trekking. The age-old problem of condensation has traditionally inhibited their mainstream use. The sigma range uses a new fabric technology that effectively resolves this fundamental issue – you can read more about this on pages 30-31.

The benefits of single-wall tents are three-fold. First, using the same pole-lengths as a double-wall tent, they are much more spacious: the gap between inner and flysheet becomes part of your internal space. Second, by disposing of the inner-wall, you are eliminating a lot of fabric and therefore, saving weight. Finally, they are simpler to pitch: there is no two-step process or need for any kind of connection between inner and flysheet.

As a consequence, not only are our new sigma tents incredibly light, but they are also extraordinarily spacious. These tents are optimised for trekking and feature a large porch for storage, easy access. Inside they have generous headroom making for comfortable living. Pitching is simple and quick, and the tents are virtually free-standing and require minimal pegging.

Price:
Persons:
Weight:
Packed size:
Colours:

£499 / €599
1
1.36 kg
45 x 15 cm
Wilderness Green
Black/Green

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Price:
Persons:
Weight:
Packed size:
Colours:

£599 / € 699
2
1.75 kg
45 x 18 cm
Wilderness Green
Black/Green

Click image above for more views

Specifications: 

Flysheet

75 g/m² 20d nylon ripstop
X-tex coating 20,000 mm hydrostatic head
Multiple guypoints
Continuous pole sleeves

The sigma tents are defined by the X-tex fabric used for the flysheet. This is unique to Lightwave and has an astonishing ability to manage the condensation that has plagued single-wall tent designs in the past. The X-tex fabric is heavier than most flysheets due to its coating, but the result is a hydrostatic head (i.e. waterproofness) that is far higher than the standard 3000-5000 mm found in nearly all tents. The coating always feels dry to the touch and is also quite light impermeable.

Porch wall

51 g/m2, 30d nylon 6.6 ripstop,
Silicon-coated on both sides, 5000 mm hydrostatic head

The porch of the sigma tents uses the same lightweight silicon-coated fabric used on our hyper and ultra ranges. Silicon-coated fabrics are the most durable and long-lasting available, particularly when minimum weight is also an important criterion.

Groundsheet

75 g/m² 50d nylon taffeta
PU-coated with 5000 mm hydrostatic head
Bath-tub construction with reinforced corners and taped seams

The sigma groundsheet is made from a durable 50-denier taffeta (plain weave). The 50-denier fabric is a reasonable balance between the need to save weight and provide adequate protection from abrasion and moisture. With most of our tents, we don’t generally advocate the use of a footprint, but we recommend this where it is appropriate to do so – in other words, when you know ground conditions are going to be harsh, or weight being carried (a footprint is an additional 200 g) is not quite so critical.

Inner wall

25g/m2, 20d nylon 6.6 ripstop, DWR treated
Mesh window

Poles

DAC 9.35 mm Featherlite (aluminium alloy)

We use the DAC Featherlite poles on the sigma tents simply because these have proved themselves time and again as the most reliable of the lighter weight alloys (ie non 7001-T6 alloy which is employed in probably 90% of all backpacking tents in the world.)

Pegs

Lightning pegs, 11 g each, square section
Flash pegs, 7 g each, rectangular section

Pegs are very important – without them, no tent could withstand anything more than the slightest breeze. Sigma tents use our Lightning peg – similar in weight to most standard pegs, but substantially stronger and capable of living with some serious abuse. Costing four times as much as normal wire pegs, these are seldom seen on all but the most highly specified and expensive tents. Supplementing these for non-critical peg-points are our Flash pegs (which are literally “half a Lightning peg”).

Guylines

2.00 mm nylon, 3 m length, Linelok adjusters

Sigma guylines are made of standard 2.0 mm nylon. They work, and with our Linelok adjusters they work and adjust very well.

Length
Width
Height
Porch

230 cm
95 cm
100 cm
70 cm

Length
Width
Height
Porch

230 cm
145 cm
105 cm
75 cm

  • TGO / Chris Townsendhttp://www.tgomagazine.co.uk/gear-editors-column/chriss-column-lightwave-s20-sigma-single-skin-tent/Revolutionary new products don’t come along very often but I think Lightwave have one with the fabric for their new Sigma range... When I heard that Lightwave had a new fabric that overcame the condensation problem I must admit I was dubious, having been disappointed by such claims before. However after three nights in damp rainy weather I am pleased to say that I’m very impressed. This new fabric really does work. ...12th July 2017
  • UKC / UKHhttps://www.ukhillwalking.com/gear/review.php?id=9073Wind, rain or shine, this is the most weather-resilient solo tent I've ever used, hands down. In the S10 Sigma I've never suffered from wet walls or drips. Even when it's raining and fairly humid outside, the inside wall of the tent feels strangely dry to the touch. It's not the last word in ultralight shelters, but for its weight you would struggle to find a sturdier or more spacious solo tent, and as such the S10 Sigma's c.1300g is more than reasonable. Stable and confidence inspiring in bad weather, and built to last, this superb wee tent is well up to any three season use, and I'd say also has a place in the winter mountains. 15th August 2017
Pitching Overview: 

One of the benefits of single-wall tents is that they are easy and quick to pitch and take down. Effectively, the sigma tents are pitched “flysheet first” as this is the only way – there is no separate inner. The poles are inserted into the flysheet and sprung into place, and the tent is then pegged out.