No, a product labeled "90 waterproof" is not completely waterproof. This designation typically means the item can withstand a certain level of water exposure, such as light rain or splashes, but it is not designed for submersion or heavy downpours. Understanding these ratings is crucial for choosing the right gear for your needs.
Demystifying "90 Waterproof": What Does It Really Mean?
When you see a product advertised as "90 waterproof," it’s easy to assume it offers near-perfect protection against water. However, this is a common misconception. This rating is more nuanced and relates to specific testing standards.
Understanding Waterproof Ratings
Waterproof ratings are not standardized across all industries. They often come from specific testing methods. For textiles, this can involve hydrostatic head tests.
- Hydrostatic Head Test: This test measures the pressure of water a fabric can withstand before it begins to leak. The result is usually given in millimeters (mm). A higher mm rating indicates better water resistance.
A "90 waterproof" rating is not a standard industry term you’ll find in official certifications like IP ratings. It’s more likely a marketing term or a simplified description of a product’s performance.
What to Expect from a "90 Waterproof" Product
If a product is described as "90 waterproof," it generally implies it offers a high degree of water resistance, but not absolute impermeability. This means it can handle situations like:
- Light rain: You can likely stay relatively dry during a brief, gentle shower.
- Splashes: Accidental splashes from puddles or water sources should not penetrate easily.
- Humidity: It may offer some protection against high humidity.
However, it’s not suitable for prolonged exposure to heavy rain, submersion in water, or high-pressure water jets. Think of it as highly water-repellent rather than truly waterproof.
Beyond the "90 Waterproof" Label: Other Water Resistance Terms
The world of water resistance is filled with various terms. Knowing these can help you make informed decisions.
Water-Resistant vs. Waterproof
This is a critical distinction.
- Water-Resistant: These products can repel water to a certain extent. They are treated with coatings that cause water to bead up and roll off. They offer protection against light moisture.
- Waterproof: These products are designed to prevent water from penetrating, even under pressure. They often have sealed seams and membranes.
A "90 waterproof" product likely falls into the highly water-resistant category, bordering on waterproof for light exposure.
IP Ratings: A More Standardized Approach
For electronics and some outdoor gear, you’ll often see IP (Ingress Protection) ratings. These are more standardized and provide a clearer understanding of protection against solids and liquids.
- IPX4: Protected against water splashes from any direction.
- IPX7: Protected against temporary immersion (up to 1 meter for 30 minutes).
- IPX8: Protected against continuous immersion under conditions specified by the manufacturer.
If your device has an IP rating, it’s generally a more reliable indicator of its water protection capabilities than a vague "90 waterproof" claim.
Practical Examples and Use Cases
Let’s consider where you might encounter a "90 waterproof" product and what that means in practice.
Outdoor Apparel
Imagine a jacket labeled "90 waterproof." This would be excellent for a day hike in unpredictable weather where you might encounter a passing shower. You’ll stay dry during moderate rain.
However, if you’re planning a multi-day trek in a rainforest or expect to be caught in a severe thunderstorm for an extended period, you’d need a jacket with a higher waterproof rating, possibly with sealed seams and a Gore-Tex membrane.
Bags and Backpacks
A "90 waterproof" backpack might be suitable for commuting to work on a bike during light rain. Your laptop and documents inside would likely remain dry from splashes and brief showers.
But if you’re kayaking or going on a boat trip, a bag with a true waterproof rating (like an IPX7 or IPX8 rating) and a roll-top closure would be essential to prevent water damage from submersion or heavy spray.
Footwear
"90 waterproof" hiking boots would offer good protection against dew-covered grass and shallow puddles. Your feet would stay comfortable during a typical day of walking.
For trekking through streams or in very wet conditions, you’d need boots with a higher waterproof rating and possibly integrated gaiters to prevent water from entering the top.
Choosing the Right Level of Water Protection
To select the best product, consider your intended use and the potential water exposure.
Assess Your Needs
- What activities will you be doing? (e.g., casual wear, hiking, water sports, electronics use)
- What are the typical weather conditions? (e.g., light drizzle, heavy rain, humidity, submersion)
- How long will the exposure to water last? (e.g., brief splashes, prolonged downpours)
Look for Specific Ratings
Whenever possible, look for products with clear, standardized ratings like IP ratings for electronics or hydrostatic head ratings for textiles. These offer a more objective measure of performance.
Consider Other Features
Beyond the waterproof rating, other features contribute to water protection:
- Sealed seams: Prevent water from seeping through stitch holes.
- Water-resistant zippers: Designed to repel water.
- Durable water repellent (DWR) coating: Helps water bead off the surface.
- Material type: Some materials are naturally more water-resistant than others.
People Also Ask
### What is considered a good waterproof rating for a jacket?
A good waterproof rating for a jacket depends on its intended use. For everyday wear and light rain, a rating of 5,000-10,000mm is often sufficient. For serious outdoor activities in heavy rain, look for ratings of 15,000mm or higher, ideally with sealed seams and a breathable membrane.
### Is 10000mm waterproof good enough for heavy rain?
Yes, a 10,000mm waterproof rating is generally considered good enough for heavy rain, especially for jackets with taped or sealed seams. This rating means the fabric can withstand the pressure of a 10-meter column of water before leaking. It’s suitable for most hiking and outdoor activities in wet conditions.
### How do I test if my product is waterproof?
For textiles, you can perform a simple splash test. Hold the fabric taut and pour a small amount of water onto it. If the water beads up and rolls off, it’s water-repellent. If it soaks in, it’s not. For electronics, always refer to the manufacturer’s IP rating and avoid testing beyond