air permeability
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What Properties Influence the Air Permeability of Wind Shirt Fabrics?
The purpose of this report is to investigate the relationship between air permeability, fabric porosity, weave type, and yarn structure via photomicrography and image analysis. This is not an exhaustive research study, but rather, an exploration of some of the fabric design attributes that have an impact on air permeability rates.
By The Numbers Fabric Air Permeability and MVTR are Closely Related, Just Not How You Might Expect
This work explores the relationship between air permeability and MVTR in fabrics that do not include a waterproof membrane.
By The Numbers – How Much Wind Penetrates Your Air Permeable Outer Layer at Hiking and Running Speeds?
Stephen Seeber helps us answer the question, "do air-permeable garments allow a noticeable amount of ventilation while hiking or running?"
Episode 48 | Waterproof Breathable Fabrics
Andrew and Ryan chat with Backpacking Light contributor Stephen Seeber about layering and waterproof-breathable fabrics.
The Search for a Fleece Replacement – A Close Look at Active Insulation and the role of MVTR
What is MVTR's role in active insulation garments?
Air permeability vs. moisture vapor transmission rate (MVTR): which one impacts moisture transport more in wind and rain jackets?
This study compares the performance of four jackets made with fabrics that span a wide range of air permeability rates and moisture vapor transmission rates (MVTR). The study shows that significantly greater moisture removal can be achieved as a function of jacket MVTR than jacket air permeability.
Helly Hansen Odin Minimalist 2.0 Jacket Review
The Helly Hansen Odin Minimalist 2.0 jacket (180 g / 6.35 oz, $220) is a lightweight 2.5-layer rain jacket with a well-designed hood and minimal features.
Standards Watch: Steve Seeber Interview
In this installment of Standards Watch, Rex interviews testing and standards development expert Steve Seeber.
