ask a general ask (why do dogs pee on fire hydrants) you get about 6 answers if youre lucky? What does that say about us?
Pretty much been stated. Men are naturally stronger, faster, and more durable than women on the whole. Of course there are exceptions, but they just prove the rule. There are certainly women that could pass the current tests to join the army or marines in a combat role, but they aren't in enough numbers to make it viable. Plus, It would have a great demoralizing effect on the men to see women getting killed, and in gruesome ways.
A cold cast resin is one that cures without producing heat.
I think due to improvements in material and manufacturing the thickness is a secondary concern to what the jacket and gear is made of. Helly Hanson (see link below) is the foul weather gear I've used for sailboat racing the last 15 years and I've found they offer a solid reputable product. They have a work line that has the features you're looking for in the rain gear you want. I'd check them out first and if you're not finding what you want try Douglas Gill next.
