Deciphering Waterproof and Breathability Ratings - SHRED DOG

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Deciphering Waterproof and Breathability Ratings

Deciphering Waterproof and Breathability Ratings

by Dallas Moore February 28, 2018 0 Comments

When it comes to buying technical apparel (or any technical product for that matter), there is always a balance between too much and not enough detailed information for most consumers. On one hand, as consumers, we often just want to know what ratings are "good" vs "less good" and how the product will perform for us. But with many brand choices on the market, it is often hard to tell what products are best when brands talk about "100% This" or "World-class That." Trying to figure out how waterproof and breathable a waterproof/breathable jacket or pair of pants really are, is a perfect example when shopping for winter outerwear. 

Because some brands do confuse the issue by talking about "100% waterproof" or "completely waterproof," thankfully there are industry standard tests and ratings that any consumer can look at to really tell the difference.

As we outlined in the What Makes Good Waterproof / Breathable Youth Gear for Snow Sports blog post, a rating of 15k/15k is better than 10k/10k, and 10k/10k is only sufficient for short periods of time, mildly active kids, and days with minimal condensation. Anything less than 10k/10k (or not named at all in a product description), should generally be avoided if you are looking for waterproof and breathable.

What the Ratings Mean

Waterproofness and Breathability ratings are separate measurements but are presented together because it is the single waterproof/breathable membrane that accomplishes both. And, to drill in a level deeper, the more detailed rating of that 15k/15k jacket is:  15k mm / 15k g/m2/24hr.

What the Waterproof Rating Means:

In that 15k/15k rating, the first number measures the waterproof rating. The “k” is thousands and the “mm” is millimeters. A 15k mm rating means that until you reach 15,000 millimeters of water, in a 1-inch diameter column, stacked on top of the fabric, the water will not penetrate the membrane. Obviously a 10k rating would absorb the water with only 10,000 mm of water sitting on the fabric.

What the Breathability Rating Means:

In the 15k/15k rating (15k mm / 15k g/m2/24hr), the second number measures breathability. The “g” is for grams, the “m2” is meters squared, and the “24hr” refers to a 24 hour period. What this rating, therefore, means is that 15,000 grams of moisture vapor will be able to pass through one square meter of the membrane in a 24 hour period. The higher the number, the more breathable, the lower the number, the less breathable.

The ratings for waterproofness and breathability will not always be the same value, (ie. 15k/15k). Some membranes will have different ratings for waterproofness and breathability dependent on their intended use. For example, a rain coat designed for walking in the city may have 10k/5k rating as the product is not being designed for prolonged exposure to moisture or high exertion levels.

So, there you have it. Not the full scientific explanation by any means, but hopefully enough information to decipher these ratings and know what to look for. If you do have questions about this or any other technical specification in SHRED DOG gear, please just let us know!

And if you want to learn how a durable water repellent (DWR) helps a waterproof/breathable membrane work better, check out this related post: Why a DWR is Necessary But Not Sufficient for Waterproof Youth Gear.




Dallas Moore
Dallas Moore

Author




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Size Guides

SHRED DOG size guides are based on body size not garment measurements.

Please note that all SHRED DOG products are designed to layer, therefore each product is cut and sized to accommodate the appropriate layers underneath it. 

Fit

If you want a "true to size" fit today with minimal room to grow, order the size that your kid falls into on the charts below.

If you want a "looser" fit with more room to grow, we recommend ordering 1 size up and using the Adjust-A-Fit System to shorten the sleeves or pant legs. As kids grow, the sleeves and pant legs can extend with them (only on Hardshells, Insulators, and Pants).

How To Measure

To get the best fitting products please take a few minutes to measure your kid following these simple steps.

For all measuring use a flexible tape. If you do not have a flexible measuring tape, you can you a piece of string etc. to take the initial measurement and then hold it up to a construction style measuring tape.

1) Chest - Measure horizontally around the fullest area of the chest (underneath the arms) with the arms down
2) Waist or Hip – use whichever measurement is bigger to select your final size
a) Waist - Measure horizontally around the narrowest part of the waist, (which is about 2 inches above the belly button)
b) Hip - With feet together measure around the fullest point of the hip,  keeping the tape measure horizontal
3) Sleeve Length - With arms in their natural position down by the side, start at point where the spine meets the base of your neck, measure out to the shoulder, then down to the wrist bone
4) Inseam Length - From crotch, along inside of the leg, to the floor.

 

*NOTE - All outerwear pieces (Hardshells, Insulators, and Pants) can have the sleeves and pant legs reduced up to 2" with our Adjust-A-Fit system. As kids grow, the sleeves and pant legs can grow with them.

Pre-Order & Team Uniform Products

Elevated Kids' Hardshell, Element Kids' Insulator, Elevated Kids' Bib / Pant, Essential Kids' Mid-layer Fleece.

All measurements are in inches.

 SIZE 4 5 6 8 10 12 14 16

CHEST

22 - 23 23 - 24 24 -25.5 26 - 27.5 28 - 30 30.5 - 32.5 33 - 34.5 35 - 37

SLEEVE LENGTH

22 24 26 27.5 29 31 33 35

WAIST

21.5 22 22.5 - 23 23.5 - 24.5 25 - 26.5 27 - 28.5 29 - 30 30.5 - 32
HIP 22 23 23 - 24 24 - 27.5 28 - 29.5 30 - 31.5 32 - 33.5

34 - 36

INSEAM LENGTH 21.37 22.37 23.37 24.87 27.37 28.87 30.37 31.87

 

Foundation Kids' Baselayers (Exclusive Pre-Order)

All Measurements are in inches.

 SIZE S (4-6) M (8-10) L (12-14) XL (16+)
CHEST 22 - 25.5 26 - 30 30.5 - 34.5 35 - 37
SLEEVE LENGTH 22 - 26 27.5 - 29 31 - 33 35
WAIST 21.5 - 23 23.5 - 26.5 27 - 30 30.5 - 32
HIP 22 - 24 24 - 29.5

30 - 33.5

34 - 36

INSEAM LENGTH 21.37 - 23.37 24.87 - 27.37 28.87 - 30.37 31.87

 

    Reference Image

    Boys T-Shirts

    All Measurements are in inches.

    Height is measured from highest point of shoulder to bottom hem.

     SIZE

    XS (4-5)

    S (6-7)

    M (8)

    L (10-12)

    CHEST

    14

    15.5

    17

    18.5

    HEIGHT 19 20.5 22 23.5

    Girls T-Shirts

    All Measurements are in inches.

    Height is measured from highest point of shoulder to bottom hem.

     SIZE

    XS (3-4)

    S (6)

    M (7-8)

    L (10-12)

    CHEST

    11.5

    12.5

    13.5

    15

    HEIGHT 19 20 21 23

    Mens T-Shirts

    All Measurements are in inches.

    Height is measured from highest point of shoulder to bottom hem.

     SIZE

    S

    M

    XL 

    XXL

    CHEST

    19

    20.5

    22

    24

    26

    HEIGHT 28 29 30 31 32

     

    Womens T-Shirts

    All Measurements are in inches.

    Height is measured from highest point of shoulder to bottom hem.

     SIZE

    S

    M

    CHEST

    16.25

    17.25

    18.25

    HEIGHT 25.375 26 26.625

    Girls Xena Hardshell, Swissie Convertible Bib Pant

    All Measurements are in inches.

     SIZE 4 5 6 S (8) M (10) L (12) XL (14)
    CHEST 22 - 23 23 - 24 24 - 25.5 26 - 27.5 28 - 30 30.5 - 32.5 33 - 34.5
    WAIST 21.5 22 22.5 - 23 23 - 24 24.5 - 26 26.5 - 28 28.5 - 29.5
    HIP 22 23 23 - 24 24 - 27.5 28 - 29.5 30 - 31.5 32 - 33.5

     

    Girls Seamless Baselayers

    All Measurements are in inches.

     SIZE XS/S (4 - 6) S/M (8 - 10) M/L (12 - 14)
    CHEST 22 - 25.5 26 - 30 30.5 - 34.5
    WAIST 21.5 - 23 23 - 26 26.5 - 29.5
    HIP 22 - 24 24 - 29.5

    30 - 33.5

     

    Boys Duke Hardshell, Ridgeback Convertible Bib Pant, Malamute Insulator

    All Measurements are in inches.

    SIZE 4 5 6 S (8) M (10) L (12) XL (14)
    CHEST 22 - 23 23 - 24 24 - 25.5 25.5 - 27 27.5 - 29.5 30 - 32 32.5 - 34
    WAIST 21.5 22 22.5 - 23 23.5 - 24.5 25 - 26.5 27 - 28.5 29 - 30
    HIP 22 23 23 - 24 24 - 27.5 27.5 - 29 29.5 - 31 31.5 - 33

       

    Boys Seamless Baselayers

    All Measurements are in inches.

    SIZE XS/S S/M M/L
    CHEST 22 - 25.5 25.5 - 29.5 30 - 34
    WAIST 21.5 - 23 23.5 - 26.5 27 - 30
    HIP 22 - 24 24 - 29 29.5 - 33