Nikwax Nikwax TX Direct Wash-In

Why breathability depends upon water repellency…
Breathable waterproof garments are most likely to get sweaty and wet inside when used in damp or wet conditions. If the outer fabric absorbs water, the garment can lose up to 70% of its breathability. Therefore, the Durable Water Repellency (DWR) on the outer fabric of your jacket must be maintained to ensure comfort. It will eventually wear off and need to be renewed with Nikwax TX.Direct®.

Waterproof clothing needs to be breathable…
"When we work hard, we sweat. The evaporation of sweat cools us down and keeps us comfortable. But, when it rains we want to avoid getting wet, so we put on waterproof outerwear to keep us dry. The waterproof fabric must allow moisture vapor to pass through it, or 'breathe'; otherwise our sweat cannot evaporate, causing us to overheat and get wet from condensation.
Additionally, if the outer fabric of your garment absorbs water and ‘wets out’ its breathability will be reduced, causing you to feel clammy and wet.
Nikwax TX.Direct® adds Durable Water Repellency (DWR), which prevents water absorption, while maintaining breathability, keeping you dry and comfortable."

How Nikwax TX.Direct® Wash-In protects…
Nikwax TX.Direct® Wash-In is the market leader. It is easy and quick to apply in a washing machine, and its highly Durable Water Repellency (DWR) develops on air drying. The washing machine application ensures that the treatment goes right through the garment, treating seams, tapes and cords, as well as the fabric. Also, as the need for tumble drying is removed, this saves energy and protects more vulnerable, older, garments from heat. Nikwax TX.Direct® Wash-In has been specifically designed and optimized for breathable waterproof garments; it leaves a flexible water repellent treatment on individual fibers allowing moisture vapor to pass through, maintaining breathability.