MVTR vs. RET How to Evaluate Outdoor Apparel Breathability Ratings
MVTR and RET are two important measurements used to evaluate fabric breathability in outdoor apparel. MVTR measures how much water vapor passes through a fabric over time, while RET measures resistance to evaporative heat transfer. For outdoor apparel brands, understanding these differences helps improve waterproof breathable fabric selection, compare supplier test results, and develop technical […]









































