Waterproof vs Water-Resistant: How to Choose the Right Running Jacket

A good running jacket is the difference between a great session and an uncomfortable, storm-battered run. Whether you regularly head out in drizzle or simply want to block wind and cold, the right jacket keeps you dry, comfortable and free from overheating. In this article we explain clearly what you need to know to choose the right running jacket: protection, breathability, construction and fit, with practical tips for different weather conditions.

Why a good running jacket matters all year round

A running jacket isn't just for rainy days. The right jacket regulates the microclimate close to your skin, protects you from wind and cold and stops you from overheating during intense efforts. A running jacket that balances protection and breathability well means you lose less energy on temperature regulation and keep more for your performance and your enjoyment.

Waterproof, water-resistant and windproof: what's the difference?

Water-resistant (water-repellent) means water droplets first bead up on the surface and roll off. This is often enough for light drizzle and short runs. Waterproof means the fabric and construction are designed so water can't get through, usually thanks to a membrane and taped seams. This is essential for prolonged or heavy rain. Windproof blocks cold wind and reduces heat loss, which really matters in low wind-chill temperatures or strong gusts.

When choosing a jacket, work out how often you run in heavy rain, how long you're outside and what temperatures you expect. For everyday use, a lightly water-resistant, windproof jacket with good breathability is often plenty. For wet, long outings, go for genuinely waterproof with taped seams and waterproof zips.

Breathability and fabric construction: RET, MVTR, membranes and taped seams

Breathability matters at least as much as water protection. Fabrics that keep water out also need to let sweat vapour escape.

What do RET and MVTR mean?

• MVTR (moisture vapour transmission rate): measures how much water vapour can pass through a fabric per square metre per day. The higher the MVTR, the more vapour can escape.
• RET (resistance to evaporation of heat): indicates how much the fabric resists evaporation. Lower RET values mean better breathability; the lower, the better.

When reading specifications, look for one of these values. A running jacket with good breathability stops you getting wet on the inside from condensation, even when the outer layer is waterproof.

Membranes, coatings and seams

There are two common approaches to keeping water out without sacrificing breathability:

• Membrane (for example a microporous membrane): lets vapour through while holding back liquid water. Membrane jackets are often waterproof and breathable at once.
• Water-resistant coating (DWR): a treatment on the outer fabric that makes water bead up. Over time this layer wears off and may need re-proofing.

Taped seams and waterproof zips make sure water doesn't sneak in through seams or fastenings. For long rainy runs or trail runs, these are essential details.

Fit and freedom of movement: hood, cuffs, hem and pockets

A running jacket has to move with you. Too tight gets in the way; too loose flaps in the wind.

• Fit: choose a lightly fitted cut that leaves room for a thin mid-layer while staying aerodynamic. A longer back hem adds extra protection against splash-up.
• Hood: an adjustable hood with a high collar and a way to cinch it is practical; just make sure the hood doesn't block your view while you run.
• Cuffs and hem: adjustable cuffs and a snug hem keep cold from creeping in and hold warmth where you need it.
• Pockets: zip pockets are handy for your phone or keys; pick ones that don't bounce while you move. An inner pocket can be useful for wet gloves or a damp layer.

When should you choose packable, insulated or softshell? (and how to layer smartly)

Your choice comes down to pace, duration and temperature.

• Packable: lightweight and foldable, ideal for changeable weather and trail runs where you don't want to carry much. Usually water-resistant and windproof, less often fully waterproof.
• Insulated: suited to cold conditions and easy runs or low-pace training. Pair with a breathable outer layer to limit condensation.
• Softshell: a flexible, soft outer layer with good wind resistance and freedom of movement. Often breathable and water-resistant, great for mild to cool days, less so for prolonged rain.

Smart layering: start with a moisture-wicking base layer, add a breathable mid-layer if needed and finish with your chosen running jacket. For women, a supportive and breathable sports bra can make a big difference to comfort and freedom of movement in wet weather. Take a look at matching layers in the Avae collections, like our sports bras and tops.

Care, checklist and where you'll see this in Avae jackets

Good care keeps your jacket performing for longer. Wash according to the label, use mild detergents and skip fabric softener (it reduces the effectiveness of DWR). Reactivate the DWR with a short tumble-dry cycle or a proofing spray once water stops beading up.

Checklist: 9 things to check before you buy

• Waterproof or water-resistant, matched to how you'll use it
• Breathability rating (RET or MVTR) suited to your effort level
• Taped seams and waterproof zips for prolonged rain
• A fit that allows movement without flapping
• An adjustable hood that doesn't limit your view
• Cuffs and hem for wind protection
• Enough well-placed zip pockets
• Weight and packability if you like to travel light
• Care instructions and whether it can be re-proofed

Where you'll see this in Avae jackets

Our jackets are designed with breathability, fit and practical details in mind. Look for styles that combine water-resistant treatments with ventilation and smart pockets. For layered running kit, find inspiration in our jacket collection and pair it with pieces like the Enhance Legging or the Sculpt Legging for comfort and movement. Small touches like breathable socks can make a difference too; see the Daily Crew Socks for everyday support.

With this knowledge you can choose a running jacket that suits your pace, your routes and the weather, so every run stays comfortable and safe. Want personal advice or to browse the collections? Take your time exploring our jackets and matching layers, or try a few favourites to feel which fit works best for you.

Soft CTA: Discover the collection and find the running jacket that matches your rhythm in our jacket collection. If you have any questions, we're always happy to help.