Although the Ferrosi blocks weather far worse than the KnifeRidge ($450), it is much more breathable. The Black Diamond Dawn Patrol Shell lands between the Ferrosi and KnifeRidge in both weather resistance and breathability making it a good compromise between the two; it retails for $199. To understand more about the different types of softshells and how they work, check out our Softshell Buying Advice article.
Ferrosi Jacket. For a reduced price of $99, the Jacket makes for a great mid-layer in your alpine clothing system.