Exped SynMat 7

£103.49
£114.99
Save 10%

Not as warm as the Down Air Mats, but the SynMats offer the same comfort, weight and compact packed size plus good value for money since the synthetic filling is cheaper than down.

Stock Code: EXP SYN7

Approximate Packed Weight: 1kg

Exped SynMat 7

Exped SynMat 7
£103.49
£114.99
Save 10%
2 In Stock

Not as warm as the Down Air Mats, but the SynMats offer the same comfort, weight and compact packed size plus good value for money since the synthetic filling is cheaper than down, and the warmth to weight ratio of the SynMat is superior when compared to regular mats.

The synthetic filling is laminated to both the top and bottom of the fabric, which eliminates the loss of loft common to synthetic filled sleeping bags. Two wide mouth valves ensure fast inflation and simple deflation. Just one quarter turn closes the valve. High quality moulded valves reduce weight and never feel cold to touch.

Similar to a sleeping bag, baffles between the mats' chambers eliminate cold spots and promote a stable and supportive air cushion. The laminated polyester face fabric is both durable and airtight and the top surface of honeycomb textured fabric provides superior slip resistance and comfort next to the skin. Seams and valves are all high frequency welded to ensure mat integrity.

The Synmat has a heat resistance value of 4.9. At about the same weight a standard 2.5 cm self inflating mat only offers a R-value of 2.5. EMPA tests demonstrated that regular mats lose 3 x more heat to cold ground than to the air. The conclusion is that a warmer mat is more important than a warmer sleeping bag.

Fabric patches and textile glue are included and the mat includes a built in pump.

US R value is 4.9 (= 8.6 Tog).

Exped Down Air Mattress 7cm
Dimensions 178 x 52 x 7cm
Packed 19 x 15cm
Fill 150g Texpedloft
Weight 900g (? stuffsack)
Temp -17°C

Togs and R Values: Typically used in the British textile industry, one Tog corresponds to the heat insulation capability of clothing etc which maintains a temperature difference of 0.1°Kelvin while passing a heat flux of 1 Watt/m2*. Some manufacturers (mainly US ones) give an R Value for the insulation properties of their mats. By this they mean an imperial equivalent (°F-ft2-h/Btu). To convert Imperial R values to Togs, multiply by 1.76228. To confuse matters there is also a metric R value, more properly called an RSI value (10 Togs = 1 RSI).
 
The higher the Tog or R (or RSI) value the better the insulation provided.
 
If you aren't totally confused by the above you should add to the mix that testing for R/Tog/RSI ratings is not by any means an exact science and that it is also expensive so, it is alleged, some figures that are given may be acquired by doing little more than taking a competitor's figure and adding a pinch for good measure. Of course, who is alleging what about whom is also not easy to ascertain!
 
*NB One Tog was originally a war time measurement of the amount of warmth retained by a typical male wearing a three piece suit - it originated from research done in the North of England - hence the term tog (though this in turn is thought to originate from the Roman word toga)!

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