Waterproof Breathable Testing Explained — Scientifically Better

We use a variety of waterproof / breathable membranes in our outerwear, and they commonly have a rating associated with them often listed in the form of mmH2O and mLH2O/m2/24hr - here’s what the mean.

Waterproof ratings and breathability explained

Designing waterproof breathable material with moisture unidirectional transport characteristics based on a TPU/TBAC tree-like and TPU nanofiber double - RSC Advances (RSC Publishing) DOI:10.1039/C7RA04843B

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Antibacterial and waterproof breathable waterborne polyurethane functionalised by graphene to develop UV and NIR-protective cotton fabric - ScienceDirect

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Technology Page - eVent Fabrics - Ultralight Outdoor Gear

Technology Page - eVent Fabrics - Ultralight Outdoor Gear