Lightweight breathable waterproof (or resistant) fabrics

I've been looking for some lightweight breathable waterproof (or resistant) fabrics for some lightweight projects I've got in mind. Here are some I've come across:

Down

I've also come across a few sources of down:

Synthetic insulation

Synthetic insulation is also available from ThruHiker in the form of both Primaloft Sport and Climashield APEX.

If you're interested in how these synthetic insulations compare to down the take a look at this thread and this thread on BackpackingLight.

Misc DIY sources

Related articles:

MYOG Resources

This is just my list of miscellaneous stuff that I've got for making my own gear. Its handy to have on-hand just in case the urge to make or repair something grabs you.

Making your own gear (MYOG)

For me, MYOG is a big part of getting what I want with as little compromise as possible. I'd never make something if I can buy something that's better, but for specialist gear and equipment you're really ...