Leslie outlines what constitutes waterproof and breathable in fabrics and shows off a few different styles of waterproof breathable fabrics carried by Discovery Fabrics. Links below:
Polartec® Neoshell Styles with Stretch/Ease: https://discoveryfabrics.com/products/polartec-neoshell-with-stretch
Polartec® Neoshell Styles without Stretch: https://discoveryfabrics.com/products/polartec-neoshell-no-stretch
Polartec® Power Shield Pro Lightweights Styles: https://discoveryfabrics.com/products/polartec-power-shield-pro-lightweight
Polartec® Power Shield Ultra Lightweight Styles: https://discoveryfabrics.com/products/polartec-power-shield-pro-ultra-lightweight