Ski Suit Waterproofing and Breathability Guide

Ever found yourself scratching your head thinking what does 10,000mm waterproofing actually mean anyway? Well, let us tell you – you’re not alone!

To help you understand what all these – often baffling – terms mean, we’ve compiled a simple to understand guide of all the lingo that you’ll come across when browsing our collection of All in One Ski Suits.


Edited Felix 2

Staying dry on the slopes, easier said than done!



Waterproofing is far and away the most important factor to consider when choosing your ski/snowboarding outerwear. A garment can only be considered truly waterproof if it is made with waterproof material and has taped seams. Taped seams are heat sealed seams that stop water from entering any garment at the stitching.

Oneskee MKIII all in one ski suits are constructed with SnowSense technology. SnowSense material is constructed from durable and weatherproof nylon-taffeta – known for its  weather-resistant and tear-resistant properties, nylon taffeta is regarded for its strength and is regularly used for outdoor applications, including: tents, jackets and storage covers.

Waterproofing is ranked in mm – the higher the number, the more waterproof the fabric.

So how is it rated?

The waterproof level of a material is tested in a lab. A one inch portion of waterproof material is pulled over a chamber filled with water and left for 24 hours. A measurement of the liquid that escapes through the material then gives it its waterproofing rating.


0 – 1,500mm – considered water resistant and typically used in dry or very light rain conditions. 
1,500mm – 5,000mm – waterproof and protective in light to average rain
10,000mm – very waterproof used for products required for heavy rain and snow conditions. 

The Oneskee MKIII Ski Suit has a rating of 10,000mm and so it provides non-stop protection against the winter weather. We only choose the highest rating fabrics so that you are fully protected to enjoy the powder for longer!


Breathability is essential for active skiers and snowboarders and defines how well your ski suit allows perspiration to escape from the inside of your clothing. It is pretty useless having a suit with a high level of waterproofing if the moisture that your body generates in the form of sweat can’t get out and makes you feel damp anyway.

Tested in a similar to way to waterproofing – a materials breathability is tested in the lab and is defined by how much water vapour escapes over a 24hr period. Measured in grams per metre squared per 24 hours (try saying that after a few jaegers!), it is more often than not shortened to gr/24hr, or just g.


Low – Under 4,000 gr/24hr

Moderate  – 4,000 to 8,000 gr/24hr

High –  9,000+ gr/24hr

Oneskee MKIII Ski Suits for Men and Women have a rating of 10,000gr/24hr and provide exceptional breathability in all conditions. Keeping you fresh and warm during all levels of activity.


So there you have it – our very simple very easy to understand guide for waterproofing and breathability. If you fancy some hardcore bed time reading you can check out these more in depth definitions.

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