Guides
These guides explain the ideas behind our rankings: what each layer does, what the numbers on a tag mean and how fabrics differ. Each one links to the rankings it relates to. Scores come from manufacturer specifications, independent reviews and owner reviews. We do not test products in person.
How to layer
What base, mid and outer layers do, how we weigh each one in our rankings and how to wear them together.
Read the guide
How to choose a rain jacket
What waterproof and water resistant mean on a jacket tag, and how to read the mm and breathability figures.
Read the guide
Merino wool or synthetic: which base layer fits you
How merino and synthetic base layers compare on odor, durability and breathability, using the ratings from our hiking base layer rankings.
Read the guide
Ready to compare products? See how we score or pick a sport from the menu.