| Fabric breathability
on its own is not enough – it’s essential to
avoid a build up of water in your clothing when you are working hard.
Too much moisture in your clothing will lead to sudden and rapid cooling
when you stop and rest. An adult working hard can produce upto 1 litre of sweat per hour – no ‘breathable’ waterproof can transfer that amount of water as moisture vapour, even when the outside air is dry. In fact, most breathable waterproofs stop transferring moisture altogether in cold, wet and windy conditions, leading to an uncomfortable and dangerous build-up of water in your clothing. Sweat is produced more at some parts of your body’s surface than others – unless that moisture is spread it can’t evaporate to cool you down. The less efficient your sweat evaporation is, the more sweat you produce – leading to even greater build up of condensation inside your clothing. Directional® Fabrics keep you more comfortable and safer because they move both sweat and liquid water to where your body needs it to be:
Combine Directional base layers and fleeces with Directional waterproofs and you get a clothing system which lets you control water and air movement to achieve the optimum body temperature whatever the weather and whatever your activity.
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