A Quick Guide to Waterproof Ratings

When you’re heading out for a ride, run, or hike in unpredictable weather, having the right gear can make all the difference. But what do our waterproof ratings actually mean? And how do you choose the right level of protection?

Here’s a simple breakdown to help you stay dry, comfortable, and visible whatever the conditions.

What Are Waterproof Ratings?

Waterproof ratings measure how resistant a fabric is to water penetration. They’re typically expressed in millimetres (mm), referring to how much water pressure the material can withstand before it starts to leak.

The higher the number, the more waterproof the fabric.

Understanding the Ratings

Here’s a quick guide to what different waterproof levels mean in real-world use:

• 0–5,000mm (Water-resistant)
  Suitable for light rain or short periods outdoors. Great for everyday use but not ideal for heavy downpours.

• 5,000–10,000mm (Moderately waterproof)
  Handles steady rain and longer sessions. A solid choice for commuting or casual outdoor activities.

• 10,000–15,000mm (Highly waterproof)
  Built for heavier rain and more demanding conditions. Ideal for regular cyclists and runners who don’t let the weather stop them.

• 15,000mm+ (Very high waterproofing)
  Designed for extreme weather. Perfect for long-distance rides, hiking, or all-day exposure to heavy rain.

It’s Not Just About Waterproofing

While waterproof ratings are important, they’re only part of the story. Breathability is just as crucial, especially when you’re active.

A jacket that keeps rain out but traps sweat inside can quickly become uncomfortable. Look for gear that balances waterproofing with breathability, so you stay dry from both the outside and inside. All proviz products are designed with this use case in mind; that's why we often match a waterproof rating with the same breathability rating for maximum comfort and performance. 

Choosing the Right Level for You

Think about how and when you’ll use your gear:

• Commuting in mixed weather? Aim for 5,000–10,000mm

• Regular training in the rain? Go for 10,000mm+

• All-weather adventurer? 15,000mm+ is your best bet

And don’t forget - visibility matters just as much as waterproofing. Reflective gear ensures you’re seen in low-light, rainy conditions when it matters most.

FAQs About Waterproof Ratings

1. Is a higher waterproof rating always better?
Not necessarily. While higher ratings offer more protection, they can sometimes reduce breathability. The best choice depends on your activity level and conditions.

2. What’s the difference between waterproof and water-resistant?
Water-resistant fabrics can handle light rain but will eventually let water in. Waterproof materials are designed to withstand sustained exposure to rain without leaking.

3. Do waterproof jackets stay waterproof forever?
No—over time, wear and washing can reduce effectiveness. Using proper care helps maintain performance and extend the life of your gear.

Staying dry shouldn’t mean compromising on comfort or visibility. With the right waterproof rating and smart design, you can keep moving—whatever the weather. Shop the full range of waterproof Proviz jackets here. 

Shine Brighter. Stay Protected.