Shorts are an obsession at Castelli. They're the most vital piece of clothing and one of the hardest to get right! Even though the Prima is their entry-level short, it shows they won't compromise anything for comfort and performance. It starts with the women's-specific KISS Air2 seat pad. Just the name gives an idea of the process of constant improvement, which started with a soft KISS pad that was improved by making it more breathable (Air) and then improved again in the latest update to use the softest-ever top fabric (2). It's ready for your next big ride indoors or out.