Claims of windproof, waterproof, and breathable are typically red flags and met with high levels of skepticism. This was our reaction and only after rigorous testing in which the materials demonstrated significantly better breathability than all other softshell materials did we make our final choice. Due diligence was performed in everything from California sun to California hail. The seams on the inside of this jacket are not taped, instead we chose to focus on breathability and rides in storms that are not categorized by a number. However, if you find yourself out when the weather turns, this jacket will be your best friend.