Stories

New Customers 5% Off Purchases: NEW27

HELLYSTUDIO'S STORYS

The latest trends in eco-friendly workout wear, tips for living a more
sustainable lifestyle, and stories of women.

Skier in a red and white safflower print ski shell jacket and matching baggy pants sitting in the snow

November 10, 2026

What Do 10K and 20K Waterproof Ratings Mean? A Ski Wear Guide

10K, 15K, 20K: what do the numbers on ski jackets and pants actually mean? Here is how waterproof and breathability ratings work and how to choose the right one.

Your cart (0items)

Spend $100.00 more for free shipping Congratulations! Your order qualifies for free shipping

Subtotal:

Popular searches:

HELLYSTUDIO'S STORYS

Stories

What Do 10K and 20K Waterproof Ratings Mean? A Ski Wear Guide

Shop

Policy

Country/region

HELLYSTUDIO'S STORYS

Stories

What Do 10K and 20K Waterproof Ratings Mean? A Ski Wear Guide

Newsletter Signup

Shop

Policy

Country/region