Salomon's line of waterproof and breathable fabrics, climaPro is an extremely versatile weatherproofing System. These fabrics come in three distinct types; climaPro, climaPro Active and climaPro Storm. climaPro, which is typically a 10k/10k rating but does come in 5k/5k, is the standard in much of Salomon's ski gear. This level offers a great balance of performance and protection. climaPro Active has 10k/30k rating, making it the most breathable of the three. These jackets and pants are great for highly aerobic winter activities such as hiking and snowshoeing. With a 20k/20k waterproof and breathability rating, Storm fabrics have the highest waterproofing, and are meant to keep you dry and warm during mother nature's worst. All of these fabrics are also Bluesign Approved, meaining they meet strict sustainability and consumer protection standards.