Jackets
Waterproof ratings, breathability, layers and insulation, explained without the marketing.
Jacket breathability ratings: MVTR, RET and what to compare
Breathability numbers come from different lab tests that don't line up. Here's how to read grams per square meter and RET, and when to ignore both.
Waterproof ratings explained: what 10,000 mm really means
The millimeter figure on a jacket or tent tells you how much water pressure the fabric resisted in a lab. Here's how to read it, and what it leaves out.
