Waterproof Clothing

Waterproof gear (e.g., GORE-TEX) blocks all moisture via membranes with microscopic pores, while water-resistant fabrics (treated with DWR) repel light rain but soak through in prolonged downpours. Waterproof ratings (e.g., 10,000mm+) quantify pressure resistance. 

DWR degradation causes saturation. Test by pouring water on sleeves – if it absorbs instead of beading, reproof using wash-in solutions (Grangers Wash + Repel). 

Yes – 3-layer construction (outer/membrane/liner) offers superior durability for multi-day hikes compared to 2.5-layer designs. Ideal for heavy rain and abrasive terrain. 

10,000-20,000mm handles moderate rain, while 28,000mm+ (e.g., Montane Phase) suits torrential conditions. Pair with breathability ratings >10,000g/m²/24hr to manage sweat. 

Use moisture-wicking baselayers (merino/polyester) to prevent clamminess. Midlayers like fleece add insulation without compromising breathability. 

GORE-TEX’s 9 billion pores per square inch block rain while releasing vapor. Its proven reliability suits extreme weather, though newer membranes like FUTURELIGHT™ offer enhanced stretch.