In reply to Stuzz: British standard for water proof is 1500mm HH, paclite is no where near 40,000 plus not very breathable, the coatings you mention have differing versions, most are actually around the 8-10,000,
Breathability and waterproofing vary for the same membrane or coating depending on the face fabric used,
the scientific breathability test gives event around the same breathability as pro shell gore tex around 20-25,000, but due to how the 2 fabrics work the real breathability of event is higher, yes, i own both fabrics, and I can confirm neither are breathable enough for all conditions and neither are waterproof enough for all conditions, when it comes down to it, you will get wet at some point,
Jacks test of a nice stretchy lightweight jacket, with a 20,000 will cope very well in a summer thunderstorm, but you will still get condensation inside, like you do with all jackets, apart from P@r@m0 but then you just get too hot in the summer
geek out over
sorry